Both way communication

[virtuallyaverage]

Update to use MDNS. Almost entire server rewrite.

• MDNS service discovery
• Dynamic connection manager
  • Automatic Reconnects
  • User Feedback
• Multiple device support with separate service names.
• Continued Modulation support
• Simple VRC address group allocation
• Serving rate of well over 100khz on 7800x3d possible. But hardware limited on ESP side to ~350hz.
• Entirely remove global variables
  • Somewhat proper scope management

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