cpython: error reporting from Python->Go calls

cpython: EncodingWarning abandoned (missed on python 3.8)

cpython: use PyCFunction_NewEx instead of PyCFunction_New

cpython: calling Go from Python mostly implemented

cpython: some preparations for implementation of Python->Go calls

wsscan: added proper Header.ReplyTo in GetScannerElementsRequest

wsscan: fixed AddrAnonymous and URL mapping for NsWSCN

wsscan: added Header.ReplyTo

wsscan: fixed actionBaseURL

wsscan: handleScannerElementRequest avoid duplicate addition to the elements

wsscan: order for actions

wsscan: attempt to handle job requests

wsscan: make Requested Element parameter variadic

wsscan: attempt to client for scannercapabilities

wsscan: Fill scan ticket