Introduce waiters for Intake Runner, Intake and Intake User

[yago-123]

Description

Introduce waiters for Intake Runners, Intakes and Intake Users. This PR is required as part of STACKIT Intake addition in the CLI.

Checklist

• Issue was linked above
• No generated code was adjusted manually (check comments in file header)
• Changelogs
  • Changelog in the root directory was adjusted (see here)
  • Changelog(s) of the service(s) were adjusted (see e.g. here)
• VERSION file(s) of the service(s) were adjusted
• Code format was applied: make fmt
• Examples were added / adjusted (see examples/ directory)
• Unit tests got implemented or updated
• Unit tests are passing: make test (will be checked by CI)
• No linter issues: make lint (will be checked by CI)

[rubenhoenle]

@yago-123 is this ready for review? Is there a reason this PR is still in draft state?

[yago-123]

@yago-123 is this ready for review? Is there a reason this PR is still in draft state?

I'm doing the examples part, I plan on asking for review today

[yago-123]

make fmt does not exist, so skipping that step. Linting is failing due to the fact that the wait package is added as part of the PR. Maybe we need to split the work in two PRs.

[github-actions]

This PR was marked as stale after 7 days of inactivity and will be closed after another 7 days of further inactivity. If this PR should be kept open, just add a comment, remove the stale label or push new commits to it.