Add snacks.nvim as a picker

[MuntasirSZN]

Describe the solution you'd like A clear and concise description of what you want to happen.

As there is telescope, fzf, mini.pick, snacks.nvim would be a good one.

[TayTTo]

@MuntasirSZN I'm gonna to say that :))

[MuntasirSZN]

Done in 0b9aebe

[TayTTo]

@MuntasirSZN wow, nice