Add support for general requests from execution to consensus layer

[sparrowDom]

• replaces the Execution layer contracts that are responsible for issuing EL -> CL communication
• adds support to verify amounts these contracts are called with
• the enableExecutionLayerGeneralPurposeRequests can be removed and the requests will still succeed. Though the tests won't be able to verify the values
• the original problem why tests were failing is that mock contracts (e.g. MockBeaconConsolidation didn't have 1 wei of ETH to pay for the fee)
• fixed the consolidation tests and added support for partial withdrawal tests

[github-actions]

	Warnings
⚠️	👀 This PR needs at least 2 reviewers

Generated by 🚫 dangerJS against 017593c

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

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##             nicka/pectra    #2571   +/-   ##
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  Hits                    ?     2288           
  Misses                  ?     3352           
  Partials                ?        3           

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[naddison36]

This is very good. Thanks