`kongctl dump ... --include-child-resources` does not include children

[rspurgeon]

For example:

kongctl dump declarative --resources=portal --include-child-resources

for portals with child resources including pages, snippets, etc... need to dump all resources for that portal into the output. Right now no children are included.

[rspurgeon]

As part of this work, we need to document dump workflows along with adopting and applying the outputs back to Konnect. IE. document the desired adopting of existing resources into the declarative system.

[rspurgeon]

Ensure the child resources includes static assets content