## Changes
This PR ensures every resource implements a custom marshaller /
unmarshaller. This is required because we directly embed Go SDK structs.
which implement custom marshalling overrides. Since the struct is
embedded, the [customer marshalling
overrides](https://pkg.go.dev/encoding/json#example-package-CustomMarshalJSON)
are promoted to the top level. If the embedded struct itself is nil,
then JSON marshal / unmarshal will panic because it tries to call
`MarshalJSON` / `UnmarshalJSON` on a nil object.
Fixing this issue at the Go SDK level does not seem possible. Discussed
with @hectorcast-db.
63617253bd