BLS signature

[xhliu]

References

https://medium.com/coinmonks/bls-signatures-on-bitcoin-fc837c799380
https://gist.github.com/paulmillr/18b802ad219b1aee34d773d08ec26ca2
https://gist.github.com/kobigurk/b9142a4755691bb12df59fbe999c2a1f
https://gist.github.com/BjornvdLaan/ca6dd4e3993e1ef392f363ec27fe74c4

[xhliu]

https://ethresear.ch/t/bls-signatures-in-solidity/7919

[xhliu]

https://github.com/kilic/evmbls