SyncPlayer 1.6.13 - native Windows installer

Added

• The Windows installer is built with NSIS, so it is a native installer instead of a
  packed application: the same components and the same wizard, about 96 MB instead of
  157 MB for an identical payload, because the archive is a single solid stream rather
  than per-file compression around a runtime.
• NSIS switches alongside the existing ones: /S for a silent install and /D=path
  for the destination, which has to come last. Everything the Setup accepted before
  (--silent, --install-dir, --no-mpv, --no-ytdlp, --no-ffmpeg,
  --no-updater, --no-shortcuts, --no-desktop-shortcut,
  --no-startmenu-shortcut, --startmenu-folder, --no-launch, --launch, and the
  SYNCPLAYER_* environment variables) still works unchanged.

Removed

• The bundled Python runtime that the installer used to carry in order to bootstrap
  itself. The installer no longer ships an interpreter.