Adds a new tool called strudel.nvim

[gruvw]

Adds a tool I created to control Strudel from Neovim using a plugin.

Check out https://github.com/gruvw/strudel.nvim for more details.

[gruvw]

@lvm or @yaxu it's been over a month, is there a particular reason why this wasn't merged yet, or you just didn't have time?

thank you :)