Adds header component to google artifact registry list page

What does this MR do and why?

Adds header component to google artifact registry list page added in Adds menu entry for Google Artifact registry (!140086 - merged)

• Resolves apollo data using local resolvers until #425149 (closed) is added
• Adds unit & features specs

MR acceptance checklist

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Before	After

Project name	Repository name

How to set up and validate locally

1. Enable container registry in the gdk https://gitlab.com/gitlab-org/gitlab-development-kit/-/blob/main/doc/howto/registry.md#set-up-container-registry-to-display-in-ui-only

2. Simulate a SAAS instance in local GDK

3. In rails console enable the experiment

   Feature.enable(:gcp_artifact_registry)

4. Visit Project > Deploy > Google Artifact registry

Related to #425154 (closed)