gitea/modules/optional
6543 f6656181e4
migrate some more "OptionalBool" to "Option[bool]" ()
just some refactoring bits towards replacing **util.OptionalBool** with
**optional.Option[bool]**

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Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
..
option.go Unify user update methods ()
option_test.go migrate some more "OptionalBool" to "Option[bool]" ()
serialization.go Make optional.Option[T] type serializable ()
serialization_test.go Make optional.Option[T] type serializable ()