Refactor python module structure

proto/tracking/lidar_tracker.proto

@@ -0,0 +1,33 @@
+syntax = "proto3";
+
+package persontracking;
+
+option java_multiple_files = true;
+option java_package = "com.example.carcontroller";
+option java_outer_classname = "MotorServiceProto";
+
+message Int32Value{
+    int32 value = 1;
+}
+
+message Empty{
+
+}
+
+message Point{
+    double angle = 1;
+    int32 distance = 2;
+    int32 group_number = 3;
+}
+
+message PointScan{
+    repeated Point points = 1;
+}
+
+service PersonTracking{
+    rpc set_tracking_group(Int32Value) returns (Empty) {}
+
+    rpc stop_tracking(Empty) returns (Empty) {}
+
+    rpc start_tracking(Int32Value) returns (Empty) {}
+}