* Use ComposablePreviewScanner to rework how screenshot testing works
* Add test sharding
* Update screenshots
* Fixes for Element Gallery
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Co-authored-by: ElementBot <benoitm+elementbot@element.io>
Co-authored-by: Benoit Marty <benoit@matrix.org>
Make danger check view changes
Add a check that if a file with @Preview or @LargeHeightPreview
in it is changed, then the corresponding build file includes
the showkase processor.
Also change the check that prompts about screenshots to use
the same @Preview logic instead of checking for "/layout" in
the path which doesn't work with compose.
Also add missing showkase processors
