This patch adds the option to take screenshots for asset previews.
Since the functionality lives inside an operator, the screenshot can only
be taken from within the GUI of Blender.
* The operator can be accessed from the dropdown menu in the asset
browser preview n-panel.
* It works for local assets and assets that are managed by blender
(e.g. brush assets)
* Click drag anywhere in Blender to create a capture
* Holding Space will move the capture area
* Holding Shift will unlock the aspect ratio
* On a re-run, the operator remembers it previous capture
area to easily create an identical screenshot
* If the screenshot is fully contained within a single 3D viewport,
the background will render transparent
Pull Request: https://projects.blender.org/blender/blender/pulls/132904
5f5c06fc24