Integration of Snyk

[achraf17]

Summary

Integrate snyk.io for web3js-quorum to be able to detect security vulnerabilities

Refer to orchestrate-node: https://github.com/ConsenSys/orchestrate-node

Acceptance Criteria

• [ ] Integrate with Snyk
• [ ] Add web3js to package.json peerDependenciees (c.f. https://docs.npmjs.com/cli/v7/configuring-npm/package-json#peerdependencies)