Ports feedback crate over to zed2. Introduces modal feedback. Feedback
submission works, but there are some TODOs in the code for things that
need to be done (needs a UI pass, dismissing the modal in certain cases,
etc), but I might merge this to reduce chances of conflicts (aleady had
to deal with a few).

<img width="1378" alt="SCR-20231206-udgp"
src="https://github.com/zed-industries/zed/assets/19867440/99f9e843-ac9c-4df1-b600-2522863e6459">

Release Notes:

- N/A