Add real robot devices and scripts to control real robot (#288)

Co-authored-by: Simon Alibert <alibert.sim@gmail.com>

lerobot/common/robot_devices/robots/utils.py

@@ -0,0 +1,9 @@
+from typing import Protocol
+
+
+class Robot(Protocol):
+    def init_teleop(self): ...
+    def run_calibration(self): ...
+    def teleop_step(self, record_data=False): ...
+    def capture_observation(self): ...
+    def send_action(self, action): ...