[Feature Request] Enable "forks" toggle via API
### Problem to solve
Currently, the "Repository > Forks" is not configurable per project via the API.
### Proposal
Allow `Repository > Forks` to be configured via the api.
### Intended users
Devon the Devops Engineer would use this in conjunction with Pulumi (or other Infrastructure configuring tools), to setup and maintain the correct settings across multiple gitlab repositories.
### User experience goal
What is the single user experience workflow this problem addresses?
A devops engineer should be able to use the API with GitLab to enable and disable the `Repository > Forks` feature on a per-project basis.
issue