cmdx new fails if users don't fork aqua-registry

[suzuki-shunsuke]

• feat: add skaji/relocatable-perl #29759 (comment)
• https://aquaproj.github.io/docs/products/aqua-registry/contributing/#cmdx-new-fails-to-push-a-commit-to-the-origin

registry-tool outputs the warning and run gh pr create if git push fails.
But seems like cmdx new doesn't work well yet.
We need to investigate it.

[suzuki-shunsuke]

• feat: add skaji/relocatable-perl #29759 (comment)

when I executed the command, the git command prompted me for a GitHub username and password. At that point, I stopped the command with Ctrl-C. Unfortunately, this prevented the message suggesting the documentation from appearing.

[suzuki-shunsuke]

• [registry-tool] Error in cmdx new command #26113

If we skip git push and run gh pr create, we are always asked. This is a bit bothersome.

? Where should we push the 'feat/suzuki-shunsuke/sort-issue-template' branch?  [Use arrows to move, type to filter]
> aquaproj/aqua-registry
  Create a fork of aquaproj/aqua-registry
  Skip pushing the branch
  Cancel