fix(dsu-server): UDP server report loop and background thread

[marcowindt]

Fixes #8.

Switched from Apple's Network.Framework NWListener to SwiftAsyncSocket pod, experience is much better.

Also includes:

• Disabling App Nap, which slows down the DSU server and loses connection.
• Disable Settings screen as it is currently not in use.
• Fixes emulated pointer in dolphin.