Bump app version to 0.5.1 and add auto-update support

- Implemented auto-update logic in `ScribeTopBar` with update notification and user interaction.
- Integrated `@tauri-apps/plugin-updater` and `@tauri-apps/plugin-process` for updater functionality.
- Added automatic migration feature with `autoMigrateElectron` support and UI feedback.
- Refactored app architecture with new routing, components, and layout for better modularity.
- Enhanced JSON response handling in API client for robust data parsing.
- Updated locales to include new translations for update and migration-related UI.

lib/locales/en.json

@@ -55,7 +55,9 @@
   "scribeTopBar": {
     "logoAlt": "Logo",
     "scribe": "Scribe",
-    "separator": " - "
+    "separator": " - ",
+    "update": "Update",
+    "updating": "Updating..."
   },
   "scribeLeftBar": {
     "editorComponents": {
@@ -217,7 +219,13 @@
     "retry": "Retry",
     "fileNotFound": "The migration file was not found at this path.",
     "dbNotFound": "The database was not found next to the migration file.",
-    "importFailed": "Import failed. Please check that the files are valid."
+    "importFailed": "Import failed. Please check that the files are valid.",
+    "autoMigrating": "Migrating your data...",
+    "autoErrorTitle": "Automatic migration failed",
+    "autoErrorText": "Your data from the previous version could not be recovered.",
+    "autoErrorContinue": "Continue without migrating",
+    "autoErrorContinueWarning": "Warning: your local data will not be recovered.",
+    "autoErrorRetry": "Retry"
   },
   "quillSense": {
     "needSubscription": "Please subscribe to QuillSense or bring your keys to access this feature.",