Investigate the usefulness of the TypedDict.ReadOnly property in output types

[Kamforka]

Official docs of TypedDict.ReadOnly: https://docs.python.org/3.13/library/typing.html#typing.ReadOnly

It might make sense to add it to *Output types and for properties like:

• _id
• _createdAt
• _createdBy
• _updatedAt
• _updatedBy
• etc...