chore: rename ClusterContext to NodeContext

src/NetworkManager.h

@@ -1,12 +1,12 @@
 #pragma once
-#include "ClusterContext.h"
+#include "NodeContext.h"
 #include <ESP8266WiFi.h>
 
 class NetworkManager {
 public:
-    NetworkManager(ClusterContext& ctx);
+    NetworkManager(NodeContext& ctx);
     void setupWiFi();
     void setHostnameFromMac();
 private:
-    ClusterContext& ctx;
+    NodeContext& ctx;
 };