Separate chat category for prayers (#72274)

## About The Pull Request

Smithers asked me to, and he's pretty cool.
Said something about being hard to notice prayers and wanting to be able
to make a unique pane for them.

This doesn't include subtle messages, tho they're dumped into admin log
so it wouldn't be that hard to stick them in the same subcategory. lemme
know if that's an issue

🆑
admin: Added a new chat category for prayers. Filter them out, move them
to their own pane, live your best life
/🆑

code/modules/admin/verbs/pray.dm

@@ -44,7 +44,7 @@
 	msg = span_adminnotice("[icon2html(cross, GLOB.admins)]<b><font color=[font_color]>[prayer_type][deity ? " (to [deity])" : ""]: </font>[ADMIN_FULLMONTY(src)] [ADMIN_SC(src)]:</b> [span_linkify(msg)]")
 	for(var/client/C in GLOB.admins)
 		if(C.prefs.chat_toggles & CHAT_PRAYER)
-			to_chat(C, msg, confidential = TRUE)
+			to_chat(C, msg, type = MESSAGE_TYPE_PRAYER, confidential = TRUE)
 	to_chat(usr, span_info("You pray to the gods: \"[msg_tmp]\""), confidential = TRUE)
 
 	SSblackbox.record_feedback("tally", "admin_verb", 1, "Prayer") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!