feat: add Linux permission handling for media access and configure main window in tauri.conf.json

- Implemented automatic permission handling for microphone and camera access on Linux using webkit2gtk.
- Updated tauri.conf.json to define the main application window with specific dimensions and properties.

src-tauri/tauri.conf.json

@@ -11,7 +11,19 @@
   },
   "app": {
     "withGlobalTauri": true,
-    "windows": [],
+    "windows": [
+      {
+        "label": "main",
+        "title": "Paarrot",
+        "width": 1200,
+        "height": 800,
+        "minWidth": 480,
+        "minHeight": 480,
+        "resizable": true,
+        "fullscreen": false,
+        "create": false
+      }
+    ],
     "security": {
       "csp": "script-src blob: data: filesystem: ws: wss: http: https: tauri: 'unsafe-eval' 'unsafe-inline' 'self'; img-src 'self' https: http: data: blob:"
     }