I2P torrents support

See https://geti2p.net/en/

There are some problems on the side of the libtorrent library, once they are resolved I will add i2p proxies.

Wait for stabilization: https://github.com/arvidn/libtorrent/issues/4511

Just bumping this feature request. The blocker mentioned above was closed as completed on Apr 10, 2023 with thr following commit to the RC_2_0 branch... https://github.com/arvidn/libtorrent/pull/7356