[robotpy][examples] Split examples and snippets (#8944)

This also updates the bazel scripts to behave more like the C++ and Java
examples, and updates the copybara scripts to be able to sync up
`mostrobotpy`

robotpyExamples/examples/SysId/robot.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) FIRST and other WPILib contributors.
+# Open Source Software; you can modify and/or share it under the terms of
+# the WPILib BSD license file in the root directory of this project.
+#
+
+from commands2 import CommandScheduler, TimedCommandRobot
+
+from sysidroutinebot import SysIdRoutineBot
+
+
+class MyRobot(TimedCommandRobot):
+    """
+    The methods in this class are called automatically corresponding to each mode,
+    as described in the TimedRobot documentation.
+    """
+
+    def __init__(self) -> None:
+        """This function is run when the robot is first started up and should be used for any
+        initialization code.
+        """
+        super().__init__()
+        self.robot = SysIdRoutineBot()
+
+        # Configure default commands and condition bindings on robot startup
+        self.robot.configureBindings()
+
+        self.autonomous_command = None
+
+    def disabledInit(self) -> None:
+        """This function is called once each time the robot enters Disabled mode."""
+        pass
+
+    def disabledPeriodic(self) -> None:
+        pass
+
+    def autonomousInit(self) -> None:
+        self.autonomous_command = self.robot.getAutonomousCommand()
+
+        if self.autonomous_command is not None:
+            CommandScheduler.getInstance().schedule(self.autonomous_command)
+
+    def autonomousPeriodic(self) -> None:
+        """This function is called periodically during autonomous."""
+        pass
+
+    def teleopInit(self) -> None:
+        # This makes sure that the autonomous stops running when
+        # teleop starts running. If you want the autonomous to
+        # continue until interrupted by another command, remove
+        # this line or comment it out.
+        if self.autonomous_command is not None:
+            self.autonomous_command.cancel()
+
+    def teleopPeriodic(self) -> None:
+        """This function is called periodically during operator control."""
+        pass
+
+    def utilityInit(self) -> None:
+        # Cancels all running commands at the start of utility mode.
+        CommandScheduler.getInstance().cancelAll()
+
+    def utilityPeriodic(self) -> None:
+        """This function is called periodically during utility mode."""
+        pass