feat: handle A_DTS

fix: allow keeping no subtitles

fix: don't add --subtitle-tracks if no subtitles are kept

fix: type subtittles -> subtitles

fix: typo audo -> audio

fix: handle 0 audio channels

feat: include year in metadata title

docs: document short terminal bug

chore: clean flake.nix a bit

fix: repository uri in Cargo.toml

feat: initial commit