chore: add one endpoint fo avoid errors

src/control_backend/schemas/ri_message.py

@@ -14,6 +14,7 @@ class RIEndpoint(str, Enum):
     GESTURE_TAG = "actuate/gesture/tag"
     PING = "ping"
     NEGOTIATE_PORTS = "negotiate/ports"
+    PAUSE = ""
 
 
 class RIMessage(BaseModel):
@@ -65,6 +66,7 @@ class GestureCommand(RIMessage):
             raise ValueError("endpoint must be GESTURE_SINGLE or GESTURE_TAG")
         return self
 
+
 class PauseCommand(RIMessage):
     """
     A specific command to pause or unpause the robot's actions.