You with some very not the side you want to approach the problem. The question which we must look for an answer to why you want it?
In normal view you have no such problem at the level of rights - DDL is forbidden for user applications. And for the people - is not solved by technical means and organizational. That is, to prod at any time of the day no access to the schema change people (and actually read by people, too, for people access not combat the remark), are not responsible for the consequences of their actions. But experts who have access should be to obstruct strangely, though the day, though, especially at night (when things are critical and you can roll out).
However, event triggers
can be ddl_command_start for a number of create commands.