Add basic light gizmos (#12228) #15

Job	Run time
build (windows-latest)	7m 33s
build (ubuntu-latest)	3m 6s
build (macos-latest)	3m 39s
check-doc	9m 58s
ci	3m 9s
miri	4m 59s
run-examples-macos-metal	4m 18s
toml	2m 1s
typos	5s
check-bevy-internal-imports	6s
check-cfg	1m 42s
check-missing-examples-in-docs	27s
check-missing-features-in-docs	30s
markdownlint	1m 7s
check-compiles	3m 54s
msrv	1m 33s
build-wasm	1m 22s
	49m 29s

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