Add more type conversions and commands.

[shachlanAmazon]

Issue #, if available:

Description of changes:

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[barshaul]

this PR should include changing config get return type in the wrappers (or move it to a different PR).
Also, please add Set type to TResult in python and the equivalent generic result type in node

[shachlanAmazon]

and the equivalent generic result type in node

See node's lib.rs - set currently returns array.

closing and moving into #731, since this requires a lot of python work.