`fuz' provided a set of basic fuzzy match and indices searching function.
The core part of algorithm is powered by Rust, with the help of emacs
dynamic modules.

Public APIs:
- `fuz-fuzzy-match-skim'
- `fuz-fuzzy-match-clangd'
- `fuz-calc-score-clangd'
- `fuz-calc-score-skim'
- `fuz-find-indices-clangd'
- `fuz-find-indices-skim'