[Feature] Ephemeral forks
### Problem to solve
We would like to use git/gitlab for policy creation. The workflow would be as follows:
1. There is a _Gitlab organization_ with all people from parliament
2. There is a _Gitlab project_ with the current policy
3. There are policy change proposals in form of _Gitlab merge requests_
- These proposals are being worked on by some members of the parliament but not all.
- Working on the proposals requires review before merging into the proposal.
4. Additional people might add suggestions for these proposals in form of _Gitlab merge requests_
### Intended users
Political parties using Gitlab to apply OpenGoverment principals by putting transparency first.
### User experience goal
The _Fork_ dialog should add an option to create a fork in the same organization with a new name and adding only some people from the organization.
### Proposal
Probably the best way to add the correct permissions would be to create a fork within the same organization but with a different name and add the corresponding people. There should be one fork for each proposal. The fork should be archived/deleted when the proposal merge request is merged into the policy.
issue