Add UI clarification for incoming TCode over Network

[zmedlnow]

UI thing that's bugging me
Media Sync as a concept works great. All of the video players are there together and it makes intuitive sense. Only one of them works at a time, and that's the one that you see selected in the dropdown. Perfect.
However, the "Internal" option is sort of a mess. You have:

• internal pattern generator
• Websocket
• TCP
• UDP
• Serial port
• Buttplug

And it's impossible to know which one has the reigns at any given time just by looking at your restim window. The best practice would seem to be to only have one of the options enabled in the settings at a time if you're messing with more than one of these.

I think there should be some sort of element that shows which of these sources is currently receiving input that is controlling the output.
initial thought is bulbs that are blank when enabled with no incoming TCode, green when enabled and incoming TCode, and greyed out when disabled. may also be useful to see which TCode axes are incoming on which.

Obviously, an alternative solution is to only enable one of these at a time, but I think it might be interesting to have TCode from different sources control different axes (no idea how that might be used but im sure there's something).

[diglet48]

Uh. Yeah.

The way I intended it to be used, is that you configure/enable all the inputs that you might need. If you want to use buttplug, you launch and connect buttplug. If you want to use VAM or MFP, you launch that. You are not really supposed to connect multiple, but you can do it and it can be useful for some.

It sounds like a lot of work to add connection indicators in the UI, so this is probably a wontfix...