[Updated] Codebase to deal with wasm-style keyboard and mouse inputs

include/services/Service.h

@@ -0,0 +1,25 @@
+#ifndef SERVICE_H
+#define SERVICE_H
+
+template <typename T>
+class Service
+{
+public:
+    Service(const Service &) = delete;
+    Service &operator=(const Service &) = delete;
+
+    static T& getInstance()
+    {
+        static T instance;
+        return instance;
+    }
+    
+protected:
+    static T* instance;
+    Service() {}
+
+private:
+
+};
+
+#endif