std.enums: add tagName()

This is safe alternative to `@tagName()` for non-exhaustive enums that
doesn't panic when given an enum value that has no tag.
5d1e69389cTravis Staloch committed on 5/10/2023, 1:07:34 PM· committed by Veikka Tuominenparent37f56a4
1 file changedLine totals unavailable