Add instance level templates to the examples page.

What does this MR do?

Add instance level templates to the examples page. This is a page that I always have trouble finding but is extremely valuable to our enterprise users. I'm not sure that we want this cross-link here, but am opening this MR to discuss it.

/cc @mikelewis @eread

What are the relevant issue numbers?

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