SLA Support in CLI

[dylanbhughes]

This PR adds SLA parsing & deployment functionality to the deploy CLI method.

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 #16558 will not alter performance

_{Comparing dylan/cloud-874-ensure-that-prefectyaml-supports-sla-configuration (6943dd2) with main (1c801c7)}

Summary

✅ 3 untouched benchmarks

[sam-phinizy]

lgtm