Add `Rotation2d` #38259

Job	Run time
miri	7m 26s
ci	3m 12s
check-bevy-internal-imports	4s
build (windows-latest)	8m 9s
check-cfg	1m 47s
check-doc	7m 29s
build (ubuntu-latest)	3m 10s
check-missing-examples-in-docs	28s
build (macos-latest)	4m 46s
toml	1m 53s
typos	7s
run-examples-macos-metal	4m 27s
check-missing-features-in-docs	34s
markdownlint	1m 18s
check-compiles	3m 47s
build-wasm	1m 18s
msrv	1m 28s
	51m 23s

Provide feedback