ci: Add and configure isort, and make it happy

examples/test_client.py

@@ -1,15 +1,15 @@
 """Example SSB Client"""
 
+from asyncio import ensure_future, gather, get_event_loop
 import base64
 import hashlib
 import logging
 import struct
 import time
-from asyncio import get_event_loop, gather, ensure_future
 
 from colorlog import ColoredFormatter
-
 from secret_handshake.network import SHSClient
+
 from ssb.muxrpc import MuxRPCAPI, MuxRPCAPIException
 from ssb.packet_stream import PacketStream, PSMessageType
 from ssb.util import load_ssb_secret

examples/test_server.py

@@ -1,13 +1,13 @@
 """Test SSB server"""
 
-import logging
 from asyncio import get_event_loop
+import logging
 
 from colorlog import ColoredFormatter
-
 from secret_handshake import SHSServer
-from ssb.packet_stream import PacketStream
+
 from ssb.muxrpc import MuxRPCAPI
+from ssb.packet_stream import PacketStream
 from ssb.util import load_ssb_secret
 
 api = MuxRPCAPI()