This MR adds support for in-line comments in the review pane. This allows you to view comments (as diagnostics) directly in the Neovim buffers that you are reviewing. You can then jump to them directly in the discussion tree if you want to reply, edit, and so forth.
This MR adds the ability to leave multi-line comments and suggested changes to an MR. The features are only supported for `diffview` because we plan to deprecate `delta` as a reviewer soon.
BREAKING CHANGE: This MR addresses an underlying issue with the original implementation in regards to detecting line numbers for comments.
As such, this is a major breaking change. The setup function signature has changed, please review the `README.md` for the new arguments. The delta pager has also been added as a dependency: https://github.com/dandavison/delta
There will be future work to implement a native solution for parsing changes and line numbers.
