Enable checkstyle on cscore, ntcore, wpiutil (#1032)

Also update to version 8.10.

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/commands/commandgroup/ReplaceMeCommandGroup.java

@@ -10,6 +10,9 @@ package edu.wpi.first.wpilibj.commands.commandgroup;
 import edu.wpi.first.wpilibj.command.CommandGroup;
 
 public class ReplaceMeCommandGroup extends CommandGroup {
+  /**
+   * Add your docs here.
+   */
   public ReplaceMeCommandGroup() {
     // Add Commands here:
     // e.g. addSequential(new Command1());

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/commands/instant/ReplaceMeInstantCommand.java

@@ -13,6 +13,9 @@ import edu.wpi.first.wpilibj.command.InstantCommand;
  * Add your docs here.
  */
 public class ReplaceMeInstantCommand extends InstantCommand {
+  /**
+   * Add your docs here.
+   */
   public ReplaceMeInstantCommand() {
     super();
     // Use requires() here to declare subsystem dependencies

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/commands/pidsubsystem/ReplaceMePIDSubsystem.java

@@ -13,7 +13,9 @@ import edu.wpi.first.wpilibj.command.PIDSubsystem;
  * Add your docs here.
  */
 public class ReplaceMePIDSubsystem extends PIDSubsystem {
-  // Initialize your subsystem here
+  /**
+   * Add your docs here.
+   */
   public ReplaceMePIDSubsystem() {
     // Intert a subsystem name and PID values here
     super("SubsystemName", 1, 2, 3);

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/commands/timed/ReplaceMeTimedCommand.java

@@ -13,6 +13,9 @@ import edu.wpi.first.wpilibj.command.TimedCommand;
  * Add your docs here.
  */
 public class ReplaceMeTimedCommand extends TimedCommand {
+  /**
+   * Add your docs here.
+   */
   public ReplaceMeTimedCommand(double timeout) {
     super(timeout);
     // Use requires() here to declare subsystem dependencies