`fields` in Collection API is missing properties

[p2004a]

There is at least no MultiReference and Option as possible values in the fields[].type enum even those can be returned.

Moreover fields[].validations is also not defined at all.

This is impacting https://github.com/webflow/js-webflow-api because the generated TypeScript types are incomplete.

The different types and validations could be modeled with https://swagger.io/docs/specification/v3_0/data-models/inheritance-and-polymorphism/ Discriminator.

[victoriaplummer]

Thanks for flagging. @p2004a - investigating this.