feat: Add Paarrot API server with endpoints for controlling app features

- Implemented API server using Express, including endpoints for health check, status, mute, deafen, channel management, and message sending.
- Added middleware for CORS and JSON body parsing.
- Created test scripts (Node.js and Bash) for API endpoint verification.
- Documented API usage and integration in new API documentation files.
- Updated package.json to include necessary dependencies (express, cors, body-parser).

package.json

@@ -22,8 +22,11 @@
   },
   "license": "AGPL-3.0-only",
   "dependencies": {
+    "body-parser": "2.2.2",
+    "cors": "2.8.6",
     "electron-store": "^8.2.0",
     "electron-updater": "^6.3.9",
+    "express": "5.2.1",
     "open": "11.0.0"
   },
   "devDependencies": {