feat(GasEstimation): adding Scroll L2 support

[re1ro]

• InterchainGasEstimation: adding support for Scroll L1 base fee estimation.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.33333% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 96.63%. Comparing base (6e42303) to head (2fc27de).

Files	Patch %	Lines
...ntracts/gas-estimation/InterchainGasEstimation.sol	93.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #152      +/-   ##
==========================================
+ Coverage   96.58%   96.63%   +0.04%     
==========================================
  Files          47       47              
  Lines         733      742       +9     
  Branches      158      159       +1     
==========================================
+ Hits          708      717       +9     
  Misses          4        4              
  Partials       21       21              

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