Synthetic `export` using `get`

[SteveL-MSFT]

Summary of the new feature / enhancement

Many resources may not support export and something like registry it doesn't make sense to export the whole registry. If you have a configuration that mixes resources that directly support export and ones that would work with get, it would make sense to allow exporting that entire configuration so it can be applied elsewhere.

Proposed technical implementation details (optional)

No response