feat: implement async jsonschema validation

[jjcfrancisco]

Closes

Add async JSON Schema validation: #627

Description

Adds asynchronous JSON Schema validation via async retrieve

Checklist

Delete any checklist items that do not apply (e.g. if your change is minor, it may not require documentation updates).

• Unit tests
• Documentation, including doctests
• Git history is linear
• Commit messages are descriptive
• (optional) Git commit messages follow conventional commits
• Code is formatted (cargo fmt)
• cargo test

[gadomski]

This is excellent, thank you! I'll release a new version w/ this merged.