[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/RapidReactCommandBot/subsystems/storage.py

@@ -0,0 +1,35 @@
+#
+# 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 Command, Subsystem
+from commands2.button import Trigger
+import wpilib
+
+from constants import StorageConstants
+
+
+class Storage(Subsystem):
+    def __init__(self) -> None:
+        """Create a new Storage subsystem."""
+        super().__init__()
+        self.motor = wpilib.PWMSparkMax(StorageConstants.kMotorPort)
+        self.ballSensor = wpilib.DigitalInput(StorageConstants.kBallSensorPort)
+
+        # Expose trigger from subsystem to improve readability and ease
+        # inter-subsystem communications
+        # Whether the ball storage is full.
+        self.hasCargo = Trigger(self.ballSensor.get)
+
+        # Set default command to turn off the storage motor and then idle
+        self.setDefaultCommand(
+            self.runOnce(self.motor.disable)
+            .andThen(self.run(lambda: None))
+            .withName("Idle")
+        )
+
+    def runCommand(self) -> Command:
+        """Returns a command that runs the storage motor indefinitely."""
+        return self.run(lambda: self.motor.set(1)).withName("run")