More plumbing, client partially implemented

Working through client implementation. The broadcast recieve + send is
working now, just have to get through all the incoming message types and
state and db work now

confetti.toml.example

@@ -7,6 +7,9 @@ keyfile = "/etc/letsencrypt/confetti/privkey.pem"
 media_directory = "/srv/confetti/media"
 statefile = "./confetti.state"
 loglevel = "debug"
+max_message_len_kb = 10000
+# Optional
+# account_creation_code = "password1"
 
 [database]
 url = "my.db.server"