Add 'type resolver' for the Test type
Add 'type resolver' for the Test type

This is necessary because Prisma client only resolves 'scalar' values,
no relations. The 'questions' field is not fetched by the client when
invoking the 'test' or 'tests' method as is done in the 'test' or
'tests' resolvers, respectively.

iquabius/olimat,iquabius/olimat,iquabius/olimat