Add motor control with grpc

MotorControl/protos/motorService.proto

@@ -0,0 +1,33 @@
+syntax = "proto3";
+
+package MotorControl;
+
+message ThrottleRequest{
+    float throttle = 1;
+}
+
+message ThrottleResponse{
+    bool throttleSet = 1;
+}
+
+message SteeringRequest{
+    float steering = 1;
+}
+
+message SteeringResponse{
+    bool steeringSet = 1;
+}
+
+message HeartbeatCheck{
+    bool continue = 1;
+}
+
+message HeartbeatCheckResponse{
+    string errorMessage = 1;
+}
+
+service CarControl{
+    rpc SetThrottle(ThrottleRequest) returns (ThrottleResponse){}
+    rpc SetSteering(SteeringRequest) returns (SteeringResponse){}
+    rpc Heartbeat(stream HeartbeatCheck) returns (HeartbeatCheckResponse){}
+}