Add provisioner for Coiled push work pools

[ntabris]

This adds a provisioner for the Coiled push work pool, so you can do this:

prefect work-pool create "my-coiled-pool" --type coiled:push --provision-infra

It's nearly identical to the Modal push work pool provisioner, substituting coiled for modal throughout.

We'll plan to handle docs as follow up PR.

Checklist

• This pull request references any related issue by including "closes <link to issue>"
  • If no issue exists and your change is not a small fix, please create an issue first.
• If this pull request adds new functionality, it includes unit tests that cover the changes
• If this pull request removes docs files, it includes redirect settings in mint.json.
• If this pull request adds functions or classes, it includes helpful docstrings.

[codspeed-hq]

CodSpeed Performance Report

Merging #16736 will not alter performance

_{Comparing ntabris:coiled-push-pool-provisioner (9d8f8e5) with main (ccbf65f)}

Summary

✅ 2 untouched benchmarks

[ntabris]

Here's what some of the flow and error messages look like currently (I hacked it so the install of coiled would fail)...

in the good case it looks like this...

[jakekaplan]

🙌