Update the wiki for 4.0 Covers TIDAL, playlist upload, albums in the Queue, in-app updates, Service Access and the spek-z spectrogram. Fixes the Qobuz and Spotify sign-in steps, the FFmpeg location and the outdated version notes, and reformats the pages with tables and contents links.
Packaging: release with GitHub Actions. Usage Guide: check FFmpeg in the log
Document build_packages.cmd on the Packaging page
Update Packaging page for the C# build script
Remove the legacy switching scripts from the Packaging page
Add Packaging page for build_packages.py