action: add force-arming (#337)

Signed-off-by: Julian Oes <[email protected]>

protos/action/action.proto

@@ -16,6 +16,15 @@ service ActionService {
      * Before arming take all safety precautions and stand clear of the drone!
      */
     rpc Arm(ArmRequest) returns(ArmResponse) {}
+    /*
+     * Send command to force-arm the drone without any checks.
+     *
+     * Attention: this is not to be used for normal flying but only bench tests!
+     *
+     * Arming a drone normally causes motors to spin at idle.
+     * Before arming take all safety precautions and stand clear of the drone!
+     */
+    rpc ArmForce(ArmForceRequest) returns(ArmForceResponse) {}
     /*
      * Send command to disarm the drone.
      *
@@ -158,6 +167,11 @@ message ArmResponse {
     ActionResult action_result = 1;
 }
 
+message ArmForceRequest {}
+message ArmForceResponse {
+    ActionResult action_result = 1;
+}
+
 message DisarmRequest {}
 message DisarmResponse {
     ActionResult action_result = 1;