chore(master): release 8.1.0

:robot: I have created a release beep boop

api: improve fuzzy-find api and doc (55040ca)
configs: new keymap <C-n> & <C-p> to navigate when fuzzy-find (ffa36d8)
menu: fuzzy_find_navigate() accepts integer as direction (b485e43)
menu: use autocmd to close fzf window after leaving insert mode (d197d2c)
utils: menu: improve ui.select() function (0c3b4f6)

menu: col field missing in fzf window config (eb3c3d8)
menu: has_bottom_border is wrong when border == { "" } (bad67c3)
menu: force fzf-window anchor to 'NW' to ensure alignment (#131) (589c1cf)
menu: make sure fzf-window aligns with menu window (#131) (a296281)
menu: scrollbar thumb not visiable (commit e68e054) (6f01ec8)
menu: should align based on menu win's border not fzf win's (22263e6)
types: add ./lua and $VIMRUNTIME/lua to library in .luarc.json (#134) (9a8e498)

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