[hal, wpilib] Add OpMode support (#7744)

User code:
- OpModeRobot used as the robot base class
- LinearOpMode and PeriodicOpMode are provided opmode base classes
- In Java, annotations can be used to automatically register opmode classes

Additional user code functionality:
- OpMode (string) is available in addition to the overall
auto/teleop/test robot mode
- OpMode does not indicate enable (enable/disable is still separate)
- The HAL API uses integer UIDs; these are exposed at the user API level
as well for faster checks
- User code creates opmodes on startup (these have name, category,
description, etc).

DS:
- DS will present opmode selection lists for auto and teleop for
match/practice. During a match, the DS will automatically activate the
selected opmode in the corresponding match period.
- For testing, an overall mode is selected (e.g. teleop/auto/test) and a
single opmode is selected

Future work:
- Command framework support/integration
- Python annotation support
- Unit tests (needs race-free DS sim updates)
- Porting of examples

Co-authored-by: Joseph Eng <91924258+KangarooKoala@users.noreply.github.com>

shared/examplecheck.gradle

@@ -62,7 +62,7 @@ def tagList = [
         "XboxController", "PS4Controller", "PS5Controller", "Joystick",
 
         /* --- RobotBase --- */
-        "Timed", "Timeslice", "RobotBase", "Educational",
+        "Timed", "Timeslice", "RobotBase", "Educational", "OpMode",
 
         /* --- Misc --- */
         /* (try to keep this section minimal) */