Qdels queries, adds sleep safety checks, DBcore checks for leaks (#38363)

* Qdels all queries, adds sleep handling

* DB Core messages admins about undeleted queries

* Compile fixes. Adds missing set waitfor

* Remove world/New shennanigans. Add DBQuery/BlockingExecute()

* Less spammy notifications to admins about undeleted queries

* Increase dbcore fire time to 1 minute

* Upgrade undeleted query warning

* Better place of death

* Fix build

* Remove BlockingExecute, see BSQL PR for why

* Yep, missed that one.

* Psyche, that's the WRONG QUERY!!

code/modules/awaymissions/corpse.dm

@@ -37,6 +37,8 @@
 	if(jobban_isbanned(user, banType))
 		to_chat(user, "<span class='warning'>You are jobanned!</span>")
 		return
+	if(QDELETED(src) || QDELETED(user))
+		return
 	var/ghost_role = alert("Become [mob_name]? (Warning, You can no longer be cloned!)",,"Yes","No")
 	if(ghost_role == "No" || !loc)
 		return