[commands] Update Command documentation (NFC) (#3881)

Add reference to which VendorDep the class is included in.
Add missing OldCommands C++ Documentation (copied from Java).

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/Command.java

@@ -32,6 +32,8 @@ import java.util.Enumeration;
  * active command is not interruptible, the other one will not even be started, and the active one
  * will continue functioning.
  *
+ * <p>This class is provided by the OldCommands VendorDep
+ *
  * @see Subsystem
  * @see CommandGroup
  * @see IllegalUseOfCommandException

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/CommandGroup.java

@@ -24,6 +24,8 @@ import java.util.Vector;
  * <p>CommandGroups can also execute commands in parallel, simply by adding them using {@link
  * CommandGroup#addParallel(Command) addParallel(...)}.
  *
+ * <p>This class is provided by the OldCommands VendorDep
+ *
  * @see Command
  * @see Subsystem
  * @see IllegalUseOfCommandException

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/ConditionalCommand.java

@@ -22,6 +22,8 @@ import java.util.Enumeration;
  * <p>A ConditionalCommand will require the superset of subsystems of the onTrue and onFalse
  * commands.
  *
+ * <p>This class is provided by the OldCommands VendorDep
+ *
  * @see Command
  * @see Scheduler
  */

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/IllegalUseOfCommandException.java

@@ -13,6 +13,8 @@ package edu.wpi.first.wpilibj.command;
  * <p>This exception should be thrown if (after a command has been locked) its requirements change,
  * it is put into multiple command groups, it is started from outside its command group, or it adds
  * a new child.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 @SuppressWarnings("serial")
 public class IllegalUseOfCommandException extends RuntimeException {

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/InstantCommand.java

@@ -9,6 +9,8 @@ package edu.wpi.first.wpilibj.command;
  *
  * <p>Subclassing {@link InstantCommand} is shorthand for returning true from {@link Command
  * isFinished}.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public class InstantCommand extends Command {
   private Runnable m_func;

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/LinkedListElement.java

@@ -4,7 +4,11 @@
 
 package edu.wpi.first.wpilibj.command;
 
-/** An element that is in a LinkedList. */
+/**
+ * An element that is in a LinkedList.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
+ */
 class LinkedListElement {
   private LinkedListElement m_next;
   private LinkedListElement m_previous;

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/PIDCommand.java

@@ -16,6 +16,8 @@ import edu.wpi.first.wpilibj.PIDSourceType;
  * <p>It provides some convenience methods to run an internal {@link PIDController} . It will also
  * start and stop said {@link PIDController} when the {@link PIDCommand} is first initialized and
  * ended/interrupted.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public abstract class PIDCommand extends Command {
   /** The internal {@link PIDController}. */

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/PIDSubsystem.java

@@ -16,6 +16,8 @@ import edu.wpi.first.wpilibj.PIDSourceType;
  *
  * <p>It provides some convenience methods to run an internal {@link PIDController} . It also allows
  * access to the internal {@link PIDController} in order to give total control to the programmer.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public abstract class PIDSubsystem extends Subsystem {
   /** The internal {@link PIDController}. */

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/PrintCommand.java

@@ -8,6 +8,8 @@ package edu.wpi.first.wpilibj.command;
  * A {@link PrintCommand} is a command which prints out a string when it is initialized, and then
  * immediately finishes. It is useful if you want a {@link CommandGroup} to print out a string when
  * it reaches a certain point.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public class PrintCommand extends InstantCommand {
   /** The message to print out. */

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/Scheduler.java

@@ -28,6 +28,8 @@ import java.util.Vector;
  * Scheduler#run() run()} often to have {@link Command Commands} function correctly. However, this
  * is already done for you if you use the CommandBased Robot template.
  *
+ * <p>This class is provided by the OldCommands VendorDep
+ *
  * @see Command
  */
 public final class Scheduler implements NTSendable, AutoCloseable {

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/Set.java

@@ -8,7 +8,11 @@ import java.util.Enumeration;
 import java.util.Vector;
 
 @SuppressWarnings("all")
-/** A set. */
+/**
+ * A set.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
+ */
 class Set {
   private Vector m_set = new Vector();
 

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/StartCommand.java

@@ -7,6 +7,8 @@ package edu.wpi.first.wpilibj.command;
 /**
  * A {@link StartCommand} will call the {@link Command#start() start()} method of another command
  * when it is initialized and will finish immediately.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public class StartCommand extends InstantCommand {
   /** The command to fork. */

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/Subsystem.java

@@ -12,15 +12,17 @@ import java.util.Collections;
 /**
  * This class defines a major component of the robot.
  *
- * <p>A good example of a subsystem is the driveline, or a claw if the robot has one.
+ * <p>A good example of a subsystem is the drivetrain, or a claw if the robot has one.
  *
  * <p>All motors should be a part of a subsystem. For instance, all the wheel motors should be a
- * part of some kind of "Driveline" subsystem.
+ * part of some kind of "Drivetrain" subsystem.
  *
  * <p>Subsystems are used within the command system as requirements for {@link Command}. Only one
  * command which requires a subsystem can run at a time. Also, subsystems can have default commands
  * which are started if there is no command running which requires this subsystem.
  *
+ * <p>This class is provided by the OldCommands VendorDep
+ *
  * @see Command
  */
 public abstract class Subsystem implements Sendable, AutoCloseable {

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/TimedCommand.java

@@ -7,6 +7,8 @@ package edu.wpi.first.wpilibj.command;
 /**
  * A {@link TimedCommand} will wait for a timeout before finishing. {@link TimedCommand} is used to
  * execute a command for a given amount of time.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public class TimedCommand extends Command {
   /**

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/WaitCommand.java

@@ -8,6 +8,8 @@ package edu.wpi.first.wpilibj.command;
  * A {@link WaitCommand} will wait for a certain amount of time before finishing. It is useful if
  * you want a {@link CommandGroup} to pause for a moment.
  *
+ * <p>This class is provided by the OldCommands VendorDep
+ *
  * @see CommandGroup
  */
 public class WaitCommand extends TimedCommand {

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/WaitForChildren.java

@@ -11,6 +11,8 @@ package edu.wpi.first.wpilibj.command;
  *
  * <p>This class is useful for the situation where you want to allow anything running in parallel to
  * finish, before continuing in the main {@link CommandGroup} sequence.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public class WaitForChildren extends Command {
   @Override

wpilibOldCommands/src/main/java/edu/wpi/first/wpilibj/command/WaitUntilCommand.java

@@ -9,6 +9,8 @@ import edu.wpi.first.wpilibj.Timer;
 /**
  * WaitUntilCommand - waits until an absolute game time. This will wait until the game clock reaches
  * some value, then continue to the next command.
+ *
+ * <p>This class is provided by the OldCommands VendorDep
  */
 public class WaitUntilCommand extends Command {
   private final double m_time;