Tricenz-64 better netcode and debug slider

In this update I improved the netcode a little bit and added a "debug slider" that you can use to adjust values (it's only available outside VR for now).

The idea is that you use the slider variable in your code for something (for example friction in your snooker game) and you can interactively move the slider on the screen as you play, seeing the effect instantly. Once the friction is what you want it to be, delete the reference to the slider variable and press Ctrl-V: the clipboard contains the latest value from the interactive slider.

I also finally made a video to show off Tricenz-64. I recorded myself playing with the tool, showing off the instant feedback you get as the running program updates the moment you save.

Here it is: