enhancement: Introducing the 'Merge All Window' Feature in Zed for Seamless Project Management

[mertcanaltin]

Check for existing issues

• [X] Completed

Describe the feature

greetings, in zed would be great to have the merge all window feature in vscode, developers working on multiple projects can manage 3 or more project screens on a single screen with this feature.

If applicable, add mockups / screenshots to help present your vision of the feature