Improvement: Add P2PK send #47
Description
Right now coco support P2PK receive via its KeyringService. However there is no API to create P2PK locked token yet. The challenge here is that this will require changes to the SendOperationService, as P2PK transactions can not be recovered after the swap has been completed (unless the key is in our keyring).
To-Dos:
- add API to create locked proofs
- adjust SendOperationService and SendOperation to properly handle operations that produce locked proofs