0.1.0

feat: release pipeline + electron-updater + ffmpeg packaging fix

- main.cjs: rewrite ffmpeg-static path to app.asar.unpacked when packaged (else every ffmpeg op silently fails in the installed app); add setupAutoUpdater (packaged-only) reading GitHub Releases.
- package.json: electron-builder build block (asarUnpack ffmpeg-static, github publish ReVid, .revid file association), electron-updater dep, version 0.1.0-poc -> 0.1.0.
- workflow: build + publish Windows installer on v* tag.
- gitignore release/.
Verified locally: ffmpeg.exe lands in app.asar.unpacked; ReVid Setup 0.1.0.exe builds.