[FEATURE] Add RippleAddress methods for get/create hot/cold wallets.
[FEATURE] Add RippleAddress methods for get/create hot/cold wallets.

Parkjeahwan/awegeeks,xdv/gatewayd,whotooktwarden/gatewayd,crazyquark/gatewayd,crazyquark/gatewayd,xdv/gatewayd,Parkjeahwan/awegeeks,whotooktwarden/gatewayd,zealord/gatewayd,zealord/gatewayd