[SC-1103] add cheapEthSender

[SevenSwen]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.23%. Comparing base (98259b2) to head (217d34b).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #134      +/-   ##
==========================================
+ Coverage   93.15%   93.23%   +0.08%     
==========================================
  Files          16       17       +1     
  Lines         336      340       +4     
  Branches       66       66              
==========================================
+ Hits          313      317       +4     
  Misses         23       23              

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[zZoMROT]

I'd like to suggest not to forget about adding the NatSpec comments and refreshing the documentation using the command:

yarn docify

[ZumZoom]

Classic transfer

9000 (positive_value_cost) + 2600 (cold_address_access_cost) - 2300 (call_stipend) + ?? (execution_cost) ~= 9300

Selfdestruct transfer

5000 (selfdestruct_cost) + 2600 (cold_address_access_cost) = 7600

Diff

9300 - 7600 = 1700

Actual diff

1778