Add Grandine Consensus client support

[khalifaa55]

Closes #381

Changes:

• Add Grandine Consensus and Validator client to network Mainnet.

Types of changes

What types of changes does your code introduce? Put an x in the boxes that apply

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] Documentation Update
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Other (please describe):

Testing

Requires testing

• [x] Yes
• [ ] No

In case you checked yes, did you write tests?

• [ ] Yes
• [x] No

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 86.59%. Comparing base (398245d) to head (9b76264).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #383   +/-   ##
========================================
  Coverage    86.59%   86.59%           
========================================
  Files           78       78           
  Lines         3977     3977           
========================================
  Hits          3444     3444           
  Misses         448      448           
  Partials        85       85           

Flag	Coverage Δ
unittests	86.59% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[kamilchodola]

putting that for test with Nethermind client :)

[kamilchodola]

@khalifaa55 Seems like it didn't worked for me: ./sedge generate --logging none -p /root full-node --map-all --no-mev-boost --no-validator --network mainnet -e nethermind:nethermindeth/nethermind:master -c grandine:sifrai/grandine:stable