Add the ability to interpret custom resources

[PI-Victor]

Context

Users should be able to define their own "objects" that skycrane can interpret.

Description

resource = struct(name="Test")

This can be then used inside a resource and deserialized into a custom structure.

Acceptance Criteria

Research if this is a feasible approach and where it should reside, in the plugins as part of the sdk/macro or in the skycrane CLI.

[linear[bot]]

CLO-90 Add the ability to interpret custom resources

[PI-Victor]

/triage /assign /label enhancement