This reverts the previous breaking change to the GetNewAddress and
GetRawChangeAddress rpcclient.Client methods, and adds the methods
GetNewAddressType and GetRawChangeAddressType for requesting
an address of a certain type. This change allows the rpcclient package
to continue to work with versions of the btcwallet app that do not
recognize the address type parameter.
In this commit, we update all the btcutil imports to point to the new
sub-module.
In the same commit, we also modify the recently added `btcutil/go.mod`
file as we need to continue pointing to the _old_ version of btcd, until
we merge this PR and push a new tag.
Adds interface for issuing a signrawtransactionwithwallet command.
Note that this does not add functionality for the btcd rpc server
itself, it simply assumes that the RPC client has this ability and gives
an API for interacting with the RPC client.
rpc: add signrawtransactionwithwallet interface
