Bittorrent DHT

Add Bittorrent DHT support to ZeroNet
Note 1: those care for anonymity can use Lokinet instead of Tor. It support UDP
Note 2: This root fork is dead you should continue work from newer fork (e.g. [zeronet-conservancy](https://github.com/zeronet-conservancy/zeronet-conservancy) or [ZeroNetX](https://github.com/ZeroNetX/ZeroNet))

Start by reviewing the newer forks named in the issue: zeronet-conservancy and ZeroNetX, since the original repository is identified as dead. The issue names no files, tests, entry points, or acceptance criteria, so the required behavior and definition of done must be established before implementation.

Written by the indexing model from the issue text.