Add Grandine Consensus client support

[khalifaa55]

Closes #381

Changes:

• Add Grandine Consensus and Validator client to network Mainnet.

Types of changes

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

Testing

Requires testing

• Yes
• No

In case you checked yes, did you write tests?

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• No

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

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)

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[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