refactor: service folder structure

include/services/Service.h

@@ -0,0 +1,9 @@
+#pragma once
+#include "ApiServer.h"
+
+class Service {
+public:
+    virtual ~Service() = default;
+    virtual void registerEndpoints(ApiServer& api) = 0;
+    virtual const char* getName() const = 0;
+};