feat: implement p2p dkg + threshold signing #4711
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avahowell
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This PR uses iroh's QUIC+TLS socket implementation along with its NAT holepunching/traversal in order to implement a mutually-authenticated+encrypted network layer for executing our implementation of FROST dkg and threshold signing.
pcligenerates iroh tickets, an encoding of the node's public key (used in TLS) and its relay address, which users then share out of band once (at the start of the DKG or signing session) in order to bootstrap authenticated connections.