adds Encoded Audio Language to the robotic voicebox. (#90635)

Robotic voiceboxes allow you to speak EAL, and you can understand it as
normal for knowing a language when said voicebox is installed.
If the Star-Wars and 40k guys can learn to intelligibly interpret robot
whirring, I'm sure we can too.

code/__DEFINES/language.dm

@@ -39,6 +39,7 @@
 #define LANGUAGE_RADIOKEY "radiokey"
 #define LANGUAGE_BABEL "babel"
 #define LANGUAGE_EMP "emp"
+#define LANGUAGE_TONGUE "tongue"
 
 // Language flags. Used in granting and removing languages.
 /// This language can be spoken.

code/modules/surgery/organs/internal/tongue/_tongue.dm

@@ -579,6 +579,18 @@
 /obj/item/organ/tongue/robot/modify_speech(datum/source, list/speech_args)
 	speech_args[SPEECH_SPANS] |= SPAN_ROBOT
 
+/obj/item/organ/tongue/robot/on_mob_insert(mob/living/carbon/receiver)
+	. = ..()
+	receiver.grant_language(/datum/language/machine, source = LANGUAGE_TONGUE)
+	to_chat(receiver, span_boldnotice("You gain a new understanding of [/datum/language/machine::name]."))
+
+/obj/item/organ/tongue/robot/on_mob_remove(mob/living/carbon/owner)
+	. = ..()
+	if(QDELING(owner))
+		return
+	owner.remove_language(/datum/language/machine, source = LANGUAGE_TONGUE)
+	to_chat(owner, span_boldnotice("You're not really sure what beeps and boops mean anymore."))
+
 /obj/item/organ/tongue/snail
 	name = "radula"
 	desc = "A minutely toothed, chitinous ribbon, which as a side effect, makes all snails talk IINNCCRREEDDIIBBLLYY SSLLOOWWLLYY."