[repoapi] move get_repository function into a new repoapi module
This new module aims to host the function of the new API replacing the old
DBAPI. `get_repository` is still needed hence moved to the new module.
Related to #2503918
if not rql('CWConstraintType X WHERE X name "RQLUniqueConstraint"',
ask_confirm=False):
rql('INSERT CWConstraintType X: X name "RQLUniqueConstraint"',
ask_confirm=False)