add protobuf

message.proto

@@ -0,0 +1,26 @@
+syntax = "proto2";
+
+package Fenceless;
+
+message Coordinate {
+    required float x = 1;
+    required float y = 2;
+}
+
+message CollarResponse {
+    required Coordinate loc = 1;
+}
+
+message Coordinates {
+    required int32 isr = 1;
+    required Coordinate coord0 = 2;
+    required Coordinate coord1 = 3;
+    required Coordinate coord2 = 4;
+    optional Coordinate coord3 = 5;
+    optional Coordinate coord4 = 6;
+    optional Coordinate coord5 = 7;
+    optional Coordinate coord6 = 8;
+    optional Coordinate coord7 = 9;
+    optional Coordinate coord8 = 10;
+    optional Coordinate coord9 = 11;
+}