fix: #268 - Add API for MacOS NSWindow::isDocumentEdited()

[joshchngs]

What kind of change does this PR introduce?

This fixes tauri-apps/tao#268 and therefore tauri-apps/tauri#3125

• [ ] Bugfix
• [ ] Feature
• [ ] Docs
• [x] New Binding issue #268
• [ ] Code style update
• [ ] Refactor
• [ ] Build-related changes
• [ ] Other, please describe:

Does this PR introduce a breaking change?

• [ ] Yes, and the changes were approved in issue #___
• [x] No

Checklist

• [x] When resolving issues, they are referenced in the PR's title (e.g fix #___, #___)
• [ ] A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.
• [x] I have added a convincing reason for adding this feature, if necessary

Other information

The setter API is added upstream in the cocoa crate (servo/core-foundation-rs PR #493)), which will need to be merged & released before this PR.

[amrbashir]

Thanks for contribution. It seems the PR you linked, just got merged, I guess we need to wait for release only.

[joshchngs]

Done. I'm not clear on the difference between Window & UnownedWindow (in terms of usage), but everything builds & tests the same.

[amrbashir]

This PR needs to wait for a new release of cocoa crate

[amrbashir]

lol the PR is so old, it was targeting next and I didn't notice so I had to cherry pick it into dev and reset next