Add a proposal for a Compliance Trestle Architecture Review

[jpower432]

Triggered by this compliance-trestle issue oscal-compass/compliance-trestle#1475

Identified as a possible larger issue by the maintainers. Need review on usability from the SDK perspective and impact on long term project health.

Areas to Review

• Co-location of the CLI and SDK repository - Discussion feat(proposals): Decouple the trestle CLI from the SDK #68

• Trestle Tasks UX

• SDK Usage

[jpower432]

@degenaro @AleJo2995 Please feel free to suggest areas to look at. It might be easiest to tackle these one at a time or see what the group in most interested in.