POC/demo of working code that shows how you can take some information, and do BLS signature aggregat

Outcome

POC/demo of working code that shows how you can take some information, and do BLS signature aggregation from 3 different signing keys for Ethereum signature verification on-chain. We should also have solidity code to confirm.

Outputs:

• Golang code loads 3 separate "private keys"
• golang code makes some generic message
• Golang code uses 3 separate PKs to "sign" message
• Golang code shows signature aggregation
• Output signed message should have BLS signature aggregation i.e. only 1 signature
• Golang code also has tests which show that from 1 signature we can confirm the 3 public keys of the 3 private keys were signers.
• Solidity code doing the same: has tests which show that from 1 signature we can confirm the 3 public keys of the 3 private keys were signers.