Add UI Materials #31814

Job	Run time
ci	4m 24s
miri	6m 19s
run-examples-on-windows-dx12	26m 54s
build (windows-latest)	5m 37s
check-bevy-internal-imports	8s
check-doc	11m 47s
build (ubuntu-latest)	4m 55s
check-missing-examples-in-docs	30s
build (macos-latest)	7m 17s
check-missing-features-in-docs	1m 8s
markdownlint	1m 14s
check-compiles	3m 50s
msrv	2m 9s
build-wasm	2m 50s
	1h 19m 2s

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