Implement FROST DKG into the DKG

[tbraun96]

We currently have a PR up on a FROST-related repo that will enable us to use that repo properly with the DKG gadget. We can use the fork, then, we can use the official repository once the PR is merged to add a DKGModule for FROST.

Steps

• Prototype the protocol using a basic network test engine, sort out any nuances (Make a prototype of WT-FROST using an underlying gossip implementation #712)
• Add a DKGModule trait implementation for FROST, e.g., FrostModule (Add FROST module #713)
• Add on-pallet logic for unsigned proposals and keygens (i.e., should_execute_keygen related information) that uses a single byte-sized field for denoting which DKGModule to use for the given unsigned proposal or keygen ([SPEC] Add on-pallet logic for unsigned proposals and keygens #714)
• Determine a mechanism for selecting a DKGModule during runtime ([SPEC] Add on-pallet logic for unsigned proposals and keygens #714)
• Add integration test that selects the FrostModule and runs it in the local chain environment Add FROST integration tests #715

[drewstone]

If we convert these into tasks (make this a proper checklist) and then assign deadlines to them. We want to get this into the Universe board.

[tbraun96]

The final part of this task, which will be done in the future, is to determine the selection algorithm/process for determining which DKG to use. Then, we must debug and test FROST.