Add non-alphabetic characters to surround operations (#8895)

[cjohnson19]

What this PR does / why we need it:

This PR adds non alphabetic characters to surround based operations (e.g. yi$, ysi$}). These actions are supported by vim surround, so users expect this to line up when interacting with VSCodeVim.

Which issue(s) this PR fixes

Fixes #8895

Special notes for your reviewer:

I added the ability to recognize which actions match user's input with a RegExp. I wasn't sure of a better way to specify motions which really encompass character classes, but am more than open to improving this based on any feedback.

[J-Fields]

Is $ a special character treated like a quote, or does this work for any character in Vim surround?

[cjohnson19]

That's a great question, and one I didn't consider previously. Looks like vim-surround will treat any non-alphabetic character as a valid surrounding target. From the documentation:

Undefined replacement characters (with the exception of alphabetic characters) default to placing themselves at the beginning and end of the destination, which can be useful for characters like / and |.

[cjohnson19]

Sorry to revive this PR.

Would we be interested in merging a version which extends the surround behavior to work for all undefined and non-alphabetic characters as opposed to just $? If so, I would be happy to work on that.