Would like to implement missing VIM motions: go to previous/next unmatched ')', '(', '}' or '{'

[helgemahrt]

Is anyone else already working on this? I did not find this mentioned in the issues or discussions.

Problem Statement

The following VIM motions don't appear to have been implemented yet: https://vimhelp.org/motion.txt.html#various-motions

[( Go to count previous unmatched '('.
[{ Go to count previous unmatched '{'.
]) Go to count next unmatched ')'.
]} Go to count next unmatched '}'.

Proposed Solution

TBH, I'm new to Zed's code base. From what I've seen, matching has already been implemented, so I'd use that as a starting point / reference to implemented the unmatched_forward and unmatched_backward motions.

[helgemahrt]

Created #21098 with the implementation