Install as CLI application

[RogueOneEcho]

Currently it's recommended to install caesura as a docker application but many users avoid containerized apps so it would be worth looking at a binary-first approach.

• Distribute binaries via GitHub releases
• Homebrew formula for simple brew install caesura with dependencies - added in 80f581e
• NixOS package - currently community maintained but doesn't handle deps or tests
• cargo install caesura works but requires Rust and doesn't handle deps (flac, lame, sox etc)

Requires deps

• FLAC - Decode without resample, encode FLAC
• LAME - Encoding MP3
• SOX - spectrograms, decoding FLAC and resampling FLAC to FLAC
• IMDL - Verifying and creating torrents Removed in 5c895db
• Imagemagick Removed in d405898
• EyeD3 - For MP3 upload description Removed in c09c1fa
• Metaflac (part of FLAC) - For FLAC upload description Removed in c09c1fa

Blockers

• Replace imdl with Rust library #140
• Replace `eyeD3` and `metaflac` generated upload descriptions with a more elegant solution #182
• Use XDG user directories by default instead of current working directory #183
• Add FLAC, SOX, and LAME versions to output of `caesura version` command #184