Client (chat): add event handler for numpad enter key

Author: feberts

client/chat_client.py

@@ -97,6 +97,7 @@ def entry_handler(_):
     border=1.5)
 
 entry.bind('<Return>', func=entry_handler)
+entry.bind('<KP_Enter>', func=entry_handler)
 window.bind('<Escape>', func=lambda _: window.destroy())
 
 text_area.pack(expand=True)