feat (Light Client): Implement Light Clients

[NicolasRampoldi]

Tasks

CLI

• [x] Get batch of proofs from S3 bucket.
• [x] Select one random proof.
• [x] Verify that proof using SP1.
• [ ] Modify getting batch of proofs from S3 bucket to querying the event from Ethereum and using that URL to fetch the batch.
• [ ] Verify any kind of proof
• [ ] Verify the whole batch
• [ ] Send result to backend
• [ ] Require an Eth account with 0.001 Ethereum
• [ ] Sign the root of the batch with Eth account

Backend

• [ ] Store responded verification by address, with batch and index of proof
• [ ] Add a step to register a client
• [ ] Limit registered clients to 1k
• [ ] Check signature
• [ ] Self update