Add upgrade indicators to runner details

What does this MR do and why?

This change adds upgrade status information to the runner details in the form an alert and a badge.

Changelog: changed
EE: true

See #356588 (closed)

Screenshots or screen recordings

before	after

How to set up and validate locally

1. Given a runner that needs an upgrade (could be a couple of versions behind)
   • If you use brew, you can use these commands to swap versions, after that run your runner:
   • In my system, I run the old version like this: /usr/local/opt/gitlab-runner@14.10.0/bin/gitlab-runner@14.10.0 run
2. With a GitLab Ultimate license
3. See the runner details in Admin -> Runners -> My Runner

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.