feat: add eigen chainspec

[devdanco]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.35%. Comparing base (6e1164f) to head (40ecdcb).
Report is 109 commits behind head on eth-rollup-develop.

❗ Current head 40ecdcb differs from pull request most recent head 0d9b50d. Consider uploading reports for the commit 0d9b50d to get more accurate results

Additional details and impacted files

@@                  Coverage Diff                   @@
##           eth-rollup-develop     #684      +/-   ##
======================================================
- Coverage               52.27%   51.35%   -0.93%     
======================================================
  Files                      44       44              
  Lines                    7573     7308     -265     
======================================================
- Hits                     3959     3753     -206     
+ Misses                   3614     3555      -59     

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[mateuszaaa]

lgtm

[mateuszaaa]

it was created before we migrated to solochain, so no longer needed

[mateuszaaa]

lgtm

[mateuszaaa]

i think we should have new chainspec called holesky because in local testnet token addresses will not match