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/controllers/subsystem/SSticker.dm

@@ -589,6 +589,9 @@ SUBSYSTEM_DEF(ticker)
 		if(findtext("[handler]","auto_declare_completion_"))
 			call(mode, handler)()
 
+	for(var/datum/team/team in GLOB.antagonist_teams)
+		team.on_round_end()
+
 	// Display the scoreboard window
 	score.scoreboard()