Add the rpc_message module, remove the notice RPC event.

data/modules.example.conf

@@ -845,6 +845,20 @@ module
  */
 #module { name = "rpc_main" }
 
+/*
+ * rpc_message
+ *
+ * Adds support for the following RPC methods:
+ *
+ * anope.messageNetwork    anope.messageServer
+ * anope.messageUser
+ *
+ * Requires either the jsonrpc or xmlrpc module.
+ *
+ * See docs/RPC/rpc_message.md for API documentation.
+ */
+#module { name = "rpc_message" }
+
 /*
  * rpc_system
  *