Adds vue-router to show GAR details page

What does this MR do and why?

Adds vue-router to show GAR details page

Updates breadcrumb state

Renders page header

Follow-up for Adds show route for google artifact registry (!141948 - merged)

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Before	After

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 URL

   http://172.16.123.1:3000/<group>/<project>/-/google_cloud_platform/artifact_registry/projects/dev-package-container-96a3ff34/locations/us- 
   east1/repositories/myrepo/dockerImages/alpine@sha256:6a0657acfef760bd9e293361c9b558e98e7d740ed0dffca823d17098a4ffddf5

Related to #425157 (closed)