[Feature]: Search branch list

[Piturnah]

Maybe within the branch list, if you type /, it will allow you to filter branches using fzf (Similar to how searching works in Vim/Helix)

Originally posted by @LukeHalasy in #79 (comment)

[CptPotato]

fyi, for searching/selection and other user prompts inquire worked very well for me so far while being really simple to use. (see inquire::Select for example)