World.dm Refactor (#27268)

* Cleanup world/New

* Moves some things from OnReboot SS Shutdowns

* Move mode handling procs to ticker

* Moves delayed reboot to ticker
Cleans up round end sound setting
Splits round end animation between SStitle and SSticker

* Moves PR announcement to where it can use the define

* Clean this bit up

* Move out datacore Initialization

* Fix some stuff

* Fix this for

* Different PR

* Gives admins reboot options

* Make it smaller

code/modules/client/client_procs.dm

@@ -636,3 +636,7 @@ GLOBAL_LIST(external_rsc_urls)
 		CRASH("change_view called without argument.")
 
 	view = new_size
+
+/client/proc/AnnouncePR(announcement)
+	if(prefs && prefs.chat_toggles & CHAT_PULLR)
+		to_chat(src, announcement)