Refactors objectives, expands team functionality, and custom teams (#22374)

* step 1

* renaming 1

* how could I forget this

* renaming 2

* renaming 3

* add matching proc, even if unused can remove later

* rename team obj to match

* oops

* okay more stuff

* okay more stuff

* fix this stuff

* okay more stuff

* needs_target = FALSE

* OKAY MORE STUFF

* OOPS AGAIN.

* self-review

* more round_end stuff

* stuff 119

* yeah fix that too

* EVEN MORE CHANGES

* grammar

* fix

* s34n review

* fixes custom teams with no antags not showing objs

* makes objectives work properly with teams

* a

code/modules/mining/lavaland/loot/bubblegum_loot.dm

@@ -64,9 +64,7 @@
 		message_admins("[key_name_admin(L)] has been marked for death by [key_name_admin(user)].")
 		log_admin("[key_name(L)] has been marked for death by [key_name(user)].")
 
-		var/datum/objective/survive/survive = new
-		survive.owner = L.mind
-		L.mind.objectives += survive
+		L.mind.add_mind_objective(/datum/objective/survive)
 		to_chat(L, "<span class='userdanger'>You've been marked for death! Don't let the demons get you!</span>")
 		L.color = "#FF0000"
 		spawn()