Protected containers: Create protection rules in project settings

What does this MR do and why?

feat: Protected containers: Protection rules in project settings ui

• Adds frontend ui for the container protection rule in project settings
• Hide project setting for container protection rules when relevant feature flag is disabled
• Code mostly taken from Protected packages: Create package protection r... (!140473 - merged)

🛠 with ❤ at Siemens

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

MR Checklist (@gerardo-navarro)

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the javascript style guides
• Conforms to the database guides

Screenshots or screen recordings

Screencast: https://www.loom.com/share/8f1db270e25346b584fd0057ce1a554a

How to set up and validate locally

1. Enable Registry by editting config/gitlab.yml with the following setting

registry:
  enabled: true

2. Restart GDK, see also https://docs.gitlab.com/ee/administration/packages/container_registry.html#configure-container-registry-under-an-existing-gitlab-domain

gdk restart

3. In rails console enable the experiment fully

Feature.enable(:container_registry_protected_containers)

4. Go to http://gdk.test:3000/flightjs/Flight/-/settings/packages_and_registries
5. Start adding new container protection rules in the second half of the page and play around with the form

Related to #441345