Implement autoupdater functionality and enhance icon management

- Added a new UpdateNotification component to inform users about available updates and facilitate installation.
- Integrated useAutoUpdater hook for managing update checks and installations.
- Updated package.json with new build and generate scripts for release preparation and key generation.
- Enhanced tauri configuration to support autoupdater with signing keys and endpoints.
- Created scripts for preparing signed releases and updating icons, ensuring a streamlined workflow for asset management.
- Added detailed documentation for autoupdater setup and icon update workflow.

tauri/src-tauri/tauri.conf.json

@@ -12,6 +12,7 @@
   "bundle": {
     "active": true,
     "targets": "all",
+    "createUpdaterArtifacts": true,
     "externalBin": [
       "binaries/voicebox-server"
     ],
@@ -56,6 +57,12 @@
   "plugins": {
     "shell": {
       "open": true
+    },
+    "updater": {
+      "pubkey": "REPLACE_WITH_YOUR_PUBLIC_KEY",
+      "endpoints": [
+        "https://github.com/YOUR_USERNAME/voicebox/releases/latest/download/latest.json"
+      ]
     }
   }
 }