feat: add HTTP plugin and permissions for fetch operations

- Updated capabilities.json to include new HTTP permissions.
- Enhanced desktop-schema.json and windows-schema.json with detailed fetch operation permissions.
- Integrated the HTTP plugin in lib.rs to enable HTTP functionalities.

package.json

@@ -14,7 +14,8 @@
   "author": "Ajay Bura",
   "license": "AGPL-3.0-only",
   "dependencies": {
-    "@tauri-apps/api": "^2.0.0"
+    "@tauri-apps/api": "^2.0.0",
+    "@tauri-apps/plugin-http": "2.5.7"
   },
   "devDependencies": {
     "@actions/github": "6.0.0",