Added missing default values for enum types (and array[enum] types).

[m-kubis]

Hey Jeffrey,
as I am making my mock data for dev/testing in a separate endpoint anyway, I figured I would share the added default values for the missing enum types.
Feel free to use it if you want.

Cheers,
Matej

[m-kubis]

I have also removed all the enum type specifications on my side as it seems not to be parsed correctly. It removes the confusing empty string item from the enum doc generated from the blueprint (kindly see the attached image).

enum[string] -> enum (string being the default type anyway)
This is not included in the PR as it is more of a cosmetic thing. Just saying.