parallelism!!!

i was able to download my whole playlist in ~30 seconds (with unbounded parallelism that lagged the rest of my laptop)

next steps:

• maybe change parallelism from hardcoded 16 to num_cpus::get() or ask tokio how many threads we have
• use ratatui and display the status of each song being downloaded, since we’re using tracing we can use https://github.com/gin66/tui-logger
• use color_eyre https://ratatui.rs/recipes/apps/color-eyre/
• maybe add login, some songs are age restricted (even if they have no lyrics)
• definitely add configurable parallelism; i think this software would rip through playlists if it had more sqlite connections and more threads

not really any screenshots to show anymore……. but i can try and show how many tracks were downloaded successfully and how long it took

the screenshot is bounded by 16 futures at a time, which is probably too small and the sqlite connection pool is capped at 5. 2 minutes is a lot. but on a good note incremental syncs only take ~5.7 seconds