v1.1.0: Windows support and custom root directories

[cwilvx]

This pull request will add the following main changes to the Swing music player's next release:

• [x] Initial Windows support in beta
  • [x] Implementation
  • [x] Testing - ongoing
• [x] Enable users to set custom root directories where music will be scanned
  • [x] Linux Implementation
  • [x] Windows Implementation
  • [x] Testing - ongoing

Other features

• [x] Respect the XDG_CONFIG_HOME specifications
• [x] Support more audio file types, including, OGG, ALAC, OPUS, etc. Full list in final release notes.
• [x] Try extracting featured artists from track title.
• [x] Try to extract artists and track title from filename if those tags are unknown.
• [x] Animate now playing track image (on left sidebar) when track is changed.

Fixes #107