vim-rhubarb for helix

[brycefisher]

I regularly navigate to code in my editor, then want to share that exact selection with my coworkers on slack. When I was using vim, I used the vim-rhubarb plugin so that I get a keymap binding to yank the current selection's github URL into my clipboard. That's one thing I still miss from vim in my daily workflow (not a whole lot else TBH).

Its really hard to search for this on github, but I can't seem to find any similar feature request discussion already around.

[kirawi]

Could probably use #6979