feat: Galileo gas price oracle

[Thegaram]

Add a new version of the L1GasPriceOracle predeploy, to be activated in the GalileoV2 hard fork.

• Add Galileo activation.
• Deprecate penaltyThreshold.
• Update range check for penaltyFactor.

[Copilot]

Pull request overview

This PR introduces support for the GalileoV2 hard fork by adding a new version of the L1 gas price calculation logic. The penalty threshold parameter is deprecated in favor of a simplified penalty calculation, and the penalty factor validation is relaxed to allow a wider range of values.

Key changes:

• Added enableGalileo() function and isGalileo flag to activate the new fork
• Deprecated penaltyThreshold parameter and its setter function
• Updated penaltyFactor validation to only check for zero (removing upper bound)

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
src/L2/predeploys/L1GasPriceOracle.sol	Implements Galileo fork logic with new _getL1FeeGalileo() function, deprecates penalty threshold, and updates penalty factor validation
src/L2/predeploys/IL1GasPriceOracle.sol	Marks penaltyThreshold as deprecated in interface documentation and removes the threshold update event
src/test/L1GasPriceOracle.t.sol	Adds testGetL1FeeGalileo() test and comments out deprecated penalty threshold usage in existing tests

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