Implement registration and confirmation of nicks

conf/example/irc.json

@@ -0,0 +1,9 @@
+{
+    "_": {
+        "register": true,
+        "entity": "NickServ",
+        "email": "{nickname}@example.com",
+        "register": "REGISTER {password} {email}",
+        "confirm": "CONFIRM {token}"
+    }
+}