feat: added misbehavior to ethereum light client

[srdtrk]

Description

closes: #164

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• Linked to GitHub issue with discussion and accepted design, OR link to spec that describes this work.
• Wrote unit and integration tests.
• Added relevant natspec and godoc comments.
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• Review SonarCloud Report in the comment section below once CI passes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.83%. Comparing base (506eee9) to head (3439465).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #270   +/-   ##
=======================================
  Coverage   99.83%   99.83%           
=======================================
  Files          13       13           
  Lines         600      600           
=======================================
  Hits          599      599           
  Misses          1        1           

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[gjermundgaraba]

This looks very clean and easy to understand! Love it!
Added unit and e2e testing of this to #144