[Linux] Add option to disable client side decoration / enable native titlebar

[DenysMb]

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• [X] Completed

Describe the feature

Hello!

Would be nice if we have an option to disable the client side decoration (enable the default native titlebar).

This way, we could integrate the editor way better with the environment.

Here is an example of VS Code using native titlebar instead of its own:

And here is Zed:

The window buttons (to close, minimize and maximize) are different and the border radius are different. With others windows opened, it looks out of place.

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

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