Add Interface Scale setting to zoom the whole app (80-200%)

src-tauri/capabilities/desktop.json

@@ -6,6 +6,7 @@
   "windows": ["main"],
   "permissions": [
     "updater:default",
-    "window-state:default"
+    "window-state:default",
+    "core:webview:allow-set-webview-zoom"
   ]
 }