Use SoundStat API

[wjakethompson]

• Major update to switch from Spotify to SoundStat after Spotify's API changes (closes Change in API for audio features #55).
• Adds a couple new songs for which Taylor has writing credits.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (6da025d) to head (0a04372).
⚠️ Report is 33 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##              main       #57    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files            6         7     +1     
  Lines          286       531   +245     
==========================================
+ Hits           286       531   +245     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.