feat(Script/Commands): .debug dummy (#9070)

* cherry-pick commit (5ed891a0f0)

Co-Authored-By: Treeston <14020072+Treeston@users.noreply.github.com>

data/sql/updates/pending_db_world/rev_1636416788284117500.sql

@@ -0,0 +1,7 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1636416788284117500');
+
+DELETE FROM `command` WHERE `name`='debug dummy';
+INSERT INTO `command` (`name`,`security`,`help`) VALUES
+('debug dummy',3,'Syntax: .debug dummy <???>
+
+Catch-all debug command. Does nothing by default. If you want it to do things for testing, add the things to its script in cs_debug.cpp.');