Fixes #37552 - container push repo content view support

[ianballou]

What are the changes introduced in this pull request?

• Allows publishing container push repositories in content views
• Allows deletion of container push repositories
• Adds authorization checks for container push
• Skips metadata generation for container push repositories
• Adds translations for container push errors

Considerations taken when implementing this change?

Other update actions on container push repositories will cause weirdness. I considered fixing that here too, but I think it'll be better for another PR. We'll need to change up the repo edit UI for container push repos.

What are the testing steps for this pull request?

1. Push some container repos to Katello and publish them in a content view
2. Try filtering content with CV publishes
3. Try deleting container push repos
4. Try pushing repositories as a user that shouldn't be able to (perhaps only has ability to create personal access tokens)
5. Try regenerating metadata for container push repositories -- see that nothing fails