[Light Client] Update Prover Related Stake Table Logic

[tbro]

prover-service retrieves stake table from a known node. Some logic will need to be updated for enabling epochs / proof of stake. Note that some prover functions are called from TestNetwork, deploy.rs and dev-node.

[mrain]

Required changes in prover service

• Remove init_stake_table
• Merge run_prover_service_with_stake_table and run_prover_service
• Change the logic of run_prover_service to check the stake table from sequencer for every update.
  • sequencer should keep a epoch -> stake table map waiting to be queried
• Better documentation

[mrain]

More discussions here: https://espresso.zulipchat.com/#narrow/channel/462904-eng-proof-of-stake/topic/prover.20service.20stake.20table.20update

We need to update the epoch transition logic as well:

• Schnorr signatures will be included in the epoch QC as well to utilize the persistent storage. In this case, we can easily recover from failed prover-service/relay server during the epoch transition.
• New logic for prover service: when it noticed an epoch transition, it goes to query service for the epoch QC that contains all the schnorr signatures and perform the epoch transition update first. We don't need to touch the relay server.

[mrain]

Created 2 blocking sub-issues: #2684 and #2685