Support recursive API requests

[dotNomad]

To support features in the VSCode extension we need a few APIs to support listing all resources, not just the ones in the "workspace root".

To accomplish this the proposal is to have a ?recursive=boolean optional query param which defaults to false. When true the endpoint will response with all of the resources found in the root and nested folders.

The APIs that need to support the recursive query param:

• GET /api/deployments
• POST /api/inspect

The recursive query param should fail when used in tandem with the entrypoint query param mentioned in #1847.

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Part of the #1849 epic