Pyancp

+ fix collections iterable issue in python 3.10
+ convert client address parameters to string
+ add Copyright and SPDX-License-Identifier

+ create sender_name based on argument source_address
+ source_address: 1.2.3.4 --> sender_name: 01:02:03:04:00:00
+ default sender_name: 01:02:03:04:05:06 if no source_address is given

+ add Access-Aggregation-Circuit-ID-ASCII TLV
+ add Access-Aggregation-Circuit-ID-Binary TLV

Initial implementation of PyANCP client library.