Add support for adminwho name links (using DB) (#66909)

I shamelessly farm GBP

Co-authored-by: Aleksej Komarov <stylemistake@gmail.com>

code/modules/admin/holder2.dm

@@ -29,6 +29,11 @@ GLOBAL_PROTECT(href_token)
 
 	var/href_token
 
+	/// Link from the database pointing to the admin's feedback forum
+	var/cached_forum_link
+	/// Last access time in deciseconds (playing nice with the MSO 10 second rule)
+	var/last_forum_access_time
+
 	var/deadmined
 
 	var/datum/filter_editor/filteriffic
@@ -165,12 +170,29 @@ GLOBAL_PROTECT(href_token)
 		owner.holder = null
 		owner = null
 
+/// Returns the feedback forum thread for the admin holder's owner, as according to DB.
+/datum/admins/proc/feedback_link()
+	if(world.time - last_forum_access_time <= 10 SECONDS)
+		return cached_forum_link
+
+	last_forum_access_time = world.time
+
+	var/datum/db_query/feedback_query = SSdbcore.NewQuery("SELECT feedback FROM [format_table_name("admin")] WHERE ckey = '[owner.ckey]'")
+
+	if(!feedback_query.Execute())
+		log_sql("Error retrieving feedback link for [src]")
+		return cached_forum_link
+	if(!feedback_query.NextRow())
+		return FALSE // no feedback link exists
+
+	cached_forum_link = feedback_query.item[1]
+	return cached_forum_link
+
 /datum/admins/proc/check_for_rights(rights_required)
 	if(rights_required && !(rights_required & rank_flags()))
 		return FALSE
 	return TRUE
 
-
 /datum/admins/proc/check_if_greater_rights_than_holder(datum/admins/other)
 	if(!other)
 		return TRUE //they have no rights