Github Actions is not a TTY and cannot run crossterm tests

[zontasticality]

Failing CI: https://github.com/knoxy5467/a-better-notion/actions/runs/8563468559/job/23468543779#step:7:676

See: actions/runner#241
Crossterm issue: crossterm-rs/crossterm#580

Options 1: Disable the tests if on actions CLI and sprinkle #[coverage(off] as needed.

Option 2: Figure out if there is a way around it that doesn't massively increase CI build time (docker? nixos CI?)

[zontasticality]

Figured out a way around the issue by abstracting over ratatui's backend as opposed to crossterm's writer. Added #[coverage(off)] to everything that couldn't be tested. (main, term, logging, hooks, etc.)