Adds Internet admin midi (#30457)

* Adds Internet admin midi

* Moves global regex into proc (shell_url_scrub)

* Moves shelleo to world
Adds quotes around the command in shelleo, to encapsulate it

* Admins can stop playing web sounds

* Revised internet midi extension order
Moved m4a to least preferred,
as it can potentially carry non-aac or non-mpeg-3 audio

* Kills \n in web sound

* play_web_sound availability based on config

* play web sound and shelleo tweaks

istypeless for in play web sound & readability parenthesis around binary AND
add return index defines for shelleo proc

* Security fix for play web sound

code/modules/admin/admin_verbs.dm

@@ -261,6 +261,8 @@ GLOBAL_LIST_INIT(admin_verbs_hideable, list(
 			verbs += GLOB.admin_verbs_poll
 		if(rights & R_SOUNDS)
 			verbs += GLOB.admin_verbs_sounds
+			if(config.invoke_youtubedl)
+				verbs += /client/proc/play_web_sound
 		if(rights & R_SPAWN)
 			verbs += GLOB.admin_verbs_spawn
 
@@ -283,6 +285,7 @@ GLOBAL_LIST_INIT(admin_verbs_hideable, list(
 		/client/proc/stealth,
 		GLOB.admin_verbs_poll,
 		GLOB.admin_verbs_sounds,
+		/client/proc/play_web_sound,
 		GLOB.admin_verbs_spawn,
 		/*Debug verbs added by "show debug verbs"*/
 		/client/proc/Cell,