Support for metadata ENUMs #3478

Job	Run time
Documentation	2m 48s
Linting	27m 12s
ubuntu-22.04 / gcc / Debug	4m 35s
Quick Checks	12s
ubuntu-22.04 / gcc / RelWithDebInfo	9m 4s
windows-2022 / Debug	20m 9s
windows-2022 / RelWithDebInfo	21m 22s
ubuntu-20.04 / clang / Debug	3m 45s
ubuntu-20.04 / clang / RelWithDebInfo	3m 38s
macos-13 / clang / Debug	8m 15s
macos-13 / clang / RelWithDebInfo	19m 59s
	2h 0m 59s

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