Create project-specific Kubernetes resources just-in-time

What does this MR do?

• Adds a new (optional) preparing status to jobs.
• Stops creating project-specific Kubernetes resources for a cluster as soon as the cluster is created.
• Creates project-specific Kubernetes resources in the preparing step for the project's deployment job.

What are the relevant issue numbers?

#57115 (closed)

Screenshots

What is still required?

• Image for preparing state (currently uses the same as created)
• Icon for preparing state (currently uses the same as created)
• Copy for preparing state

Does this MR meet the acceptance criteria?

• 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 database guides
• [-] Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer