Add recording functionality, did some other minor tweaks as well to protos

protobuf/src/main/proto/car/control/motorService.proto

@@ -7,6 +7,8 @@ option java_multiple_files = true;
 option java_package = "org.vato.carcontroller";
 option java_outer_classname = "MotorServiceProto";
 
+import "google/protobuf/empty.proto";
+
 message ThrottleRequest{
     float throttle = 1;
 }
@@ -23,7 +25,17 @@ message SteeringResponse{
     bool steeringSet = 1;
 }
 
+message RecordingReqeust{
+    bool record = 1;
+}
+
+message SaveRequest{
+    string file = 1;
+}
+
 service CarControl{
     rpc SetThrottle(ThrottleRequest) returns (ThrottleResponse){}
     rpc SetSteering(SteeringRequest) returns (SteeringResponse){}
-}
+    rpc Record(RecordingReqeust) returns (google.protobuf.Empty) {}
+    rpc SaveRecordedData(SaveRequest) returns (google.protobuf.Empty) {}
+}