implement command responses

server/proto/core.proto

@@ -60,10 +60,24 @@ message CommandDefinitionRequest {
 }
 
 message Command {
-    Timestamp timestamp = 1;
-    map<string, TelemetryValue> parameters = 2;
+    UUID uuid = 1;
+    Timestamp timestamp = 2;
+    map<string, TelemetryValue> parameters = 3;
+}
+
+message CommandResponse {
+    UUID uuid = 1;
+    bool success = 2;
+    string response = 3;
+}
+
+message ClientSideCommand {
+    oneof inner {
+        CommandDefinitionRequest request = 1;
+        CommandResponse response = 2;
+    }
 }
 
 service CommandService {
-    rpc NewCommand (CommandDefinitionRequest) returns (stream Command);
+    rpc NewCommand (stream ClientSideCommand) returns (stream Command);
 }