add the listen-local-network.py script as a dev helper

.gitignore

@@ -2,3 +2,5 @@
 /dist
 /pycalaos.egg-info
 __pycache__
+
+/credentials-*.json

listen-local-network.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+import json, time
+
+from pycalaos import discover, Client
+
+ip_address = discover(5)
+
+if ip_address == "":
+    ip_address = input(f"Please provide the Calaos server IP address: ")
+
+try:
+    f = open(f"credentials-{ip_address}.json")
+    credentials = json.load(f)
+    username = credentials["username"]
+    password = credentials["password"]
+except:
+    username = input(f"Please provide the username for {ip_address}: ")
+    password = input(f"Please provide the password for {ip_address}: ")
+
+    f = open(f"credentials-{ip_address}.json", mode="w")
+    json.dump({"username": username, "password": password}, f)
+
+print("Connecting...")
+client = Client("https://"+ip_address, username, password)
+print("Connected.", end="", flush=True)
+
+while True:
+    time.sleep(0.5)
+    events = client.poll()
+    if len(events) > 0:
+        print("\n")
+        for ev in events:
+            print(ev)
+    else:
+        print(".", end="", flush=True)