Gelato using execTransaction for gas metering

[remedcu]

This PR converts the gas metering check from using 4337 EntryPoint v0.6 to using execTransaction directly in Safe.

Package Lock has been updated due to the addition of the Gelato relay kit package.

Changes:

• Allow execution of Gelato-based transactions in base-sepolia as well.
• Updating gas metering in README's from Gelato based on execTransaction.
• Introduction of abi, address and types files into its location.
• Changing from userOp of 4337 to execTransaction of Safe for Gelato-based transactions.
• Installation of Gelato Relay Kit. (Earlier RPC calls were used directly for userOps).
• Additional functions for Gelato-based operations in safe.ts (Creating calldata, init code, etc.).
• Removal of userOp related functions of Gelato.

Closes #296

[coveralls]

Pull Request Test Coverage Report for Build 8328578423

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+62.4%) to 76.923%

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Totals
Change from base Build 8328447414:	62.4%
Covered Lines:	131
Relevant Lines:	155

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💛 - Coveralls

[nlordell]

Looks great.

There are some linter warnings that would be nice to clean up, but that can be done in a follow up.