Handle maps to structs in schema

[clux]

Fixes #21 once it is done. Missing the recursion piece. We are generating the struct now.

[clux]

I think this is actually handling the case BTreeMap<String, SomeStruct> which i guess we hadn't seen before, and the additional props inlines the struct in the usual btreemap case. Have filled in as much as I have test data for.

@imp are you able to verify this against any instances of clusters.cluster.x-k8s.io you might have? (and if possible do you have a secret-sanitized instance we can use for a test case?) I think we are fixing the issue here now (in combination with the earlier fixes), but would be good to know before releasing since the test case here only covers generation not serialization.

[clux]

The big unknowns to me are if this really is a BTreeMap case (most documentation i find on the crd are unclear on this - they just say object) and if so, do we need to recurse further down into it.

[clux]

Going to merge this for now. It is definitely better with this in that not. I don't think the BTreeMap<String, SomeStruct> case works without it.