Add "change_address" and "change_type" options to name_new/firstupdate/update

[JeremyRand]

Is your feature request related to a problem? Please describe.

The send RPC method allows controlling the change destination via the change_address and change_type options. Unfortunately, these are not available for the name RPC methods.

Describe the solution you'd like

Add the change_address and change_type fields to the options parameter in the three name methods, so that name transactions have feature parity with currency transactions.

Describe alternatives you've considered

N/A.

Additional context

N/A.