Add support for chrono Weekday

[yuki0418]

Hi, I try to use ToSchema derive with chrono::WeekDay, but return error

the trait bound `chrono::Weekday: utoipa::ToSchema` is not satisfied
the following other types implement trait `utoipa::ToSchema`

Looks like chrono::Weekday not supported yet so I may create PR to add support like below PR?
#404

Or let me know if there is an another way for this.

[juhaku]

Looks like chrono::Weekday not supported yet so I may create PR to add support like below PR?

Yes, it is not supported as of now, you can create a PR like that to support it. alternatively you can alias it globally with utoipa-config or locally via value_type=... attribute. See example here #1205 (comment)