Adds Handheld Radio/Listener system

[Bright0]

episode 2 bc gitkraken obliterated my older PR with nonsense

[RemieRichards]

@Bright0 check out my suggestions above

[Bright0]

Alright so I think things make a lot more sense now. ChatManager only checks if the listener is within the voice range and passes the distance to the listening component so that it can compare with its individual IListen interfaces. I didn't need a GetListenRange method on the listening component so I deleted it, the interface's GetListenRange method now works as intended since the listening component iterates through all of the attached relevant components and checks their individual listen ranges. @RemieRichards Everything should be good if you wanna check it out again

[ShadowCommander]

Looks pretty good. It's possible to simplify and use the existing EntitySystem EntityQuery instead of subscribing and unsubscribing. The same thing can probably done for the listener.

[RemieRichards]

@Bright0 I personally wouldn't have removed the GetListenRange, as it would have allowed listeners to hear wider than voice range (which, while probably rare for balance reasons, could have been useful)

but it's fine I suppose. cross that bridge if we come to it.

[Bright0]

ready to merge unless there's anything else I should do

[ShadowCommander]

Remove _listeningSystem reference here and do what was done for RadioComponent to replace the subscribe unsubscribe.

[ShadowCommander]

Gonna need @PJB3005's feedback on this. Should the RadioSystem be saved like this or should it just be fetched every time on line 56.

[ShadowCommander]

If you do this, as I think Remie said before, it's possible to remove the ListeningComponent completely.

[ShadowCommander]

Suggested change

	listener.GetComponent<ListeningComponent>()
	.PassSpeechData(message, source, dist);
	foreach (var listener in entity.GetAllComponents<IListen>())
	{
	if (dist > listener.GetListenRange())
	{
	continue;
	}
	listener.HeardSpeech(message, source);
	}