Integrate Nimbus in Go EVMLab

[zah]

Go EVMLab is a project implementing differential fuzzing of EVM implementations (running the same code in multiple EVMs, and aiming to get a different result or potentially a crash).

Currently, it reuses the format of the Ethereum state tests which are already supported by Nimbus and expects each client to produce an EVM execution trace (also, already supported by Nimbus).

We need to develop a custom binary conforming to the expectations of the EVMLab fuzzing tool and implement a nimbus.go integration module calling our binary here:

https://github.com/holiman/goevmlab/tree/master/evms

• Build the custom binary through a new Makefile target
• Submit a PR in the Go Evmlab repo

[jangko]

The first half part is done.

[jangko]

fixed by holiman/goevmlab#77, closing