$LS_COLORS replace icons provider
- mock devicons
- cache learned pattern
- https://github.com/ms-jpq/chadtree/blob/7334155c68acd932e275fbf203f05eebf7f741ed/chadtree/view/ls_colours.py
- https://github.com/sharkdp/lscolors/blob/1a4376077ad09bdada79af738de60d4e3e128104/src/lib.rs
- https://github.com/eza-community/eza/blob/67970d6346b526db0ee9143be6e422abf2fb31fc/src/theme/lsc.rs