added sync projectiles/boxes

src/network/LocalClient.h

@@ -17,6 +17,7 @@ namespace ZL {
 
         bool IsConnected() const override { return true; }
         int GetClientId() const { return 1; }
+        std::vector<ProjectileInfo> getPendingProjectiles();
 
         std::unordered_map<int, ClientStateInterval> getRemotePlayers() override {
             return std::unordered_map<int, ClientStateInterval>();