Adds quick "Command Announcement" button for Game Masters (#355)

code/modules/admin/admin_verbs.dm

@@ -333,6 +333,7 @@ var/list/roundstart_mod_verbs = list(
 		add_verb(src, /client/proc/open_resin_panel)
 		add_verb(src, /client/proc/open_sound_panel)
 		add_verb(src, /client/proc/toggle_join_xeno)
+		add_verb(src, /client/proc/admin_marine_announcement)
 		add_verb(src, /client/proc/game_master_rename_platoon)
 		add_verb(src, /client/proc/toggle_vehicle_blockers)
 		add_verb(src, /client/proc/toggle_ai_xeno_weeding)

code/modules/admin/game_master/extra_buttons/marine_announce.dm

@@ -0,0 +1,16 @@
+/client/proc/admin_marine_announcement()
+	set name = "Command Announcement"
+	set category = "Game Master.Extras"
+
+	if(!check_rights(R_ADMIN))
+		return
+
+	var/body = tgui_input_text(src, "Enter the body text for the announcement.", title = "Announcement Body", multiline = TRUE, encode = FALSE)
+	if(!body)
+		return
+	var/title = tgui_input_text(src, "Enter the title of the announcement. Leave blank for the default title.", title = "Announcement Title")
+	if(!title)
+		title = COMMAND_ANNOUNCE
+	marine_announcement(body, "[title]")
+	message_admins("[key_name_admin(src)] has made an admin command announcement.")
+	log_admin("[key_name_admin(src)] made an admin command announcement: [body]")

colonialmarines.dme

@@ -1405,6 +1405,7 @@
 #include "code\modules\admin\game_master\resin_panel.dm"
 #include "code\modules\admin\game_master\sound_panel.dm"
 #include "code\modules\admin\game_master\extra_buttons\fire_support_menu.dm"
+#include "code\modules\admin\game_master\extra_buttons\marine_announce.dm"
 #include "code\modules\admin\game_master\extra_buttons\rappel_menu.dm"
 #include "code\modules\admin\game_master\extra_buttons\rename_platoon.dm"
 #include "code\modules\admin\game_master\extra_buttons\toggle_ai_xeno_weeding.dm"