Update Node-RED configuration and documentation for room management

- Added node-red/config_files/flows_cred.json to .gitignore to prevent committing sensitive credentials.
- Updated documentation references to the new location of room-config.js in node-red/config_files/ for clarity.
- Removed the obsolete room-config.js file, centralizing configuration management.

This update enhances security and improves the organization of Node-RED configuration files, ensuring better management of room settings.

node-red/config_files/package.json

@@ -0,0 +1,17 @@
+{
+    "name": "node-red-project",
+    "description": "A Node-RED Project",
+    "version": "0.0.1",
+    "private": true,
+    "dependencies": {
+        "node-red-contrib-bigtimer": "~2.8.6",
+        "node-red-contrib-cron-plus": "~2.2.4",
+        "node-red-contrib-home-assistant-websocket": "~0.80.3",
+        "node-red-contrib-nvl": "~1.2.1",
+        "node-red-contrib-telegrambot": "~17.0.5",
+        "node-red-contrib-watchdirectory": "~1.0.14",
+        "node-red-contrib-zigbee2mqtt": "~2.7.5",
+        "node-red-dashboard": "~3.6.6",
+        "node-red-timer-scheduler": "~1.0.6"
+    }
+}