Forward decals (port of bevy_contact_projective_decals) #53514

Job	Run time
ci	2m 13s
build (windows-latest)	2m 19s
build (ubuntu-latest)	2m 20s
build (macos-latest)	2m 23s
check-bevy-internal-imports	4s
check-missing-examples-in-docs	39s
miri	13m 28s
check-doc	2m 3s
run-examples-macos-metal	2m 1s
toml	2m 0s
typos	6s
check-missing-features-in-docs	29s
markdownlint	1m 5s
check-compiles	0s
check-compiles-no-std	0s
build-wasm-atomics	0s
msrv	0s
build-wasm	0s
	31m 10s

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