T3010

Depends on D13406

Add new API endpoint /address/<validEcashAddress>. Returns a object with queried address and an array of registered aliases for that address.

node index.js
Check out localhost:5000/address/ecash:qzvydd4n3lm3xv62cx078nu9rg0e3srmqq0knykfed and note aliases
Check out localhost:5000/address/qzvydd4n3lm3xv62cx078nu9rg0e3srmqq0knykfed and note the same aliases
Check out localhost:5000/address/notAnAddress and note {"error":"Input must be a valid prefixed ecash: address"}
Chek out for arbitrary ecash address with no aliases and note no aliases