Spec Integration: Ucan Invocation+ 1.0 / rs-ucan updates: Parity

[zeeshanlakhani]

Summary

We want to move to Ucan Invocation ucan-wg/invocation#21 and leverage the updated work happening with rs-ucan. This should remove the need for homestar-invocation or make that an extremely small layer.

Components and Changes

• Implement schemars (i.e. JSON-Schema) on the rs-ucan side.
• Leverage the test-utils feature in rs-ucan to replace our mocks and test-utils from homestar-invocation.
• Implement diesel
• Instructions replaced
• homestar-workflow should take in invocations (not tasks)
• A non-anyhow, generalized bail/ensure (somewhere)