Custom error messages for types #22
Description
Similar to the Repository type. Messages probably will have the same structure, so maybe it makes sense to have a helper type family that takes several arguments and builds the message from them.
The following types currently lack custom error messages:
- RepositoryArgs
- IssuesArgs
- PullRequestsArgs
- CreateIssueInput
- IssueOrder
- LabelsArgs
- AssigneesArgs