feat: `ibhagwan/fzf-lua` support (#150)

* feat: `ibhagwan/fzf-lua` support

* feat(picker): close buffer

* fix: telescope lang picker

* feat: adjust picker sizes

* docs: `picker.provider` config

* feat: picker provider resolver

fix(console): draw extmarks on `InsertLeave`

feat(cmd): `Leet last_submit`