refactor: service folder structure

include/services/NodeService.h

@@ -0,0 +1,21 @@
+#pragma once
+#include "services/Service.h"
+#include "NodeContext.h"
+#include <ArduinoJson.h>
+#include <Updater.h>
+
+class NodeService : public Service {
+public:
+    NodeService(NodeContext& ctx);
+    void registerEndpoints(ApiServer& api) override;
+    const char* getName() const override { return "Node"; }
+
+private:
+    NodeContext& ctx;
+    
+    void handleStatusRequest(AsyncWebServerRequest* request);
+    void handleUpdateRequest(AsyncWebServerRequest* request);
+    void handleUpdateUpload(AsyncWebServerRequest* request, const String& filename, size_t index, uint8_t* data, size_t len, bool final);
+    void handleRestartRequest(AsyncWebServerRequest* request);
+    void handleCapabilitiesRequest(AsyncWebServerRequest* request);
+};