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.

src-tauri/capabilities/default.json

@@ -13,6 +13,12 @@
     "autostart:default",
     "updater:default",
     "dialog:default",
-    "process:allow-restart"
+    "process:allow-restart",
+    {
+      "identifier": "http:default",
+      "allow": [
+        { "url": "https://api.telegram.org/**" }
+      ]
+    }
   ]
 }