v0.6.1: add mac publish profiles

[z00mable]

[## Summary

Expanded TokyBay with support for 8 additional audiobook sites and several UX improvements.

New Supported Sites

• goldenaudiobook.net
• fulllengthaudiobooks.net
• bigaudiobooks.net
• findaudiobook.com
• bookaudiobook.net
• hotaudiobooks.com
• hdaudiobooks.net
• audiozaic.com

Changes

Scraper

• GoldenAudiobookStrategy — new strategy for sites using <source type="audio/mpeg"> tags; covers goldenaudiobook.net and 5 further sites with identical structure
• PlaylistAudiobookStrategy — new strategy for sites using a data-playlist JSON attribute; currently covers hdaudiobooks.net
• Fixed redundant conversion: files already in the target format (e.g. MP3 → MP3) are no longer re-converted

CI/CD

• GitHub Actions release pipeline: automatically publishes self-contained binaries for Windows, Linux x64, and Linux ARM64 on every PR merge, and creates a GitHub Release with the PR description as release notes
• add Mac support

UX

• Save location is now displayed after a completed download
• README overhauled: non-technical Quick Start, full supported sites table with status, demo GIF
  ]