Refactored the TTS subsystem to more properly handle message garbling. Added a volume preference for TTS. (#75559)

TTS subsystem refactor.
---------

Co-authored-by: Watermelon914 <3052169-Watermelon914@users.noreply.gitlab.com>
Co-authored-by: Iamgoofball <iamgoofball@gmail.com>
Co-authored-by: Kyle Spier-Swenson <kyleshome@gmail.com>

code/modules/wiremod/components/atom/hear.dm

@@ -41,7 +41,7 @@
 
 /obj/item/circuit_component/hear/Hear(message, atom/movable/speaker, datum/language/message_language, raw_message, radio_freq, list/spans, list/message_mods, message_range)
 	if(speaker == parent?.shell)
-		return
+		return FALSE
 
 	message_port.set_output(raw_message)
 	if(message_language)
@@ -49,3 +49,4 @@
 	speaker_port.set_output(speaker)
 	speaker_name.set_output(speaker.GetVoice())
 	trigger_port.set_output(COMPONENT_SIGNAL)
+	return TRUE