Describe the feature or problem you’d like to solve

I'd like gh repo create to have the options --allow_squash_merge, --allow_merge_commit, --allow_rebase_merge, and --delete_branch_on_merge.

Proposed solution

As well as --enable-issues, --homepage, and so on, the preliminary options would help many users to create a repository.

Additional context

The implementation would be easy, so I'd like to support or implement this function if this proposal is accepted.

If some guys agree with this proposal, please add the 👍 reaction!