Fill context menu of Zed macOS dock icon with recent projects (#8952)

Fixes https://github.com/zed-industries/zed/issues/8416

Release Notes:

- Added recent projects into Zed's macOS dock icon context menu ([8416](https://github.com/zed-industries/zed/issues/8416))

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Co-authored-by: Kirill Bulatov <kirill@zed.dev>