Feature/v0.7.5 prep

[tehkillerbee]

• Enum cleanup
• Added misc. fields to album. Get audio resolution for album + individ…
• Handle audio modes, added misc helper functions for audio mode
• Handle missing Stream fields gracefully. Get stream audio resolution (bit depth, rate)
• Added HiRes page, cleanup comments
• Set default artist IMG if missing
• Error handling: Handle TooManyRequests gracefully
• Use default album IMG URI instead of direct URL
• Update dependencies
• Make sure is_pkce state is set when pkce_login_url() is used directly
  -Fixed misc tests: Fix default_cover test, fix lyrics test. Renamed pk…