gpui: Make screen capture dependency optional (#32937)

Add `screen-capture` feature to gpui to enable screen capture support.  The motivation for this is to make dependencies on scap / x11 / xcb optional.

Release Notes:

- N/A

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Co-authored-by: Michael Sloan <michael@zed.dev>
9dc3ac9657Hilmar Wiegand committed on 7/2/2025, 4:15:06 PM· committed by GitHubparent6d09f3f
12 files changedLine totals unavailable