Ability to customize template for automatically created MR
### Problem to solve
As a developer, when I create MR directly from issue, the MR description contains `closes #<issue_id>`. However, in our development flow after the MR is merged, we would rather add label to the issue.
### Further details
It is possible to add merge request templates for MR created manually, but not automatically.
### Proposal
Add support for `.gitlab/merge_requests_templates/mr_from_issue_default.md`
### Links / references
issue