feat: implement dynamic versioning from Git tags

- Add build.rs to read version from git describe --tags
- Create update-version.mjs script to sync version across files
- Add get_app_version() command to Rust backend
- Update App.tsx to use custom version command
- Run version update in CI before Rust checks

src-tauri/tauri.conf.json

@@ -26,7 +26,7 @@
   },
   "bundle": {
     "active": true,
-    "targets": ["deb", "rpm", "nsis"],
+    "targets": ["deb", "rpm"],
     "icon": [
       "icons/32x32.png",
       "icons/128x128.png",