feat: paymaster snip-29 in Contract class

[PhilippeR26]

Motivation and Resolution

SNIP-29 Paymaster is today accessible from an Account class, but not from a Contract class.
This PR add Paymaster in Contract class.

Usage related changes

• fee estimation

const feeEstimation = await tokenContract.estimate(
  'transfer',
  [destinationAddress, cairo.uint256(100)],
  { paymasterDetails: feesDetails }
);

• invoke

const res1 = await tokenContract.invoke('transfer', [destinationAddress, cairo.uint256(100)], {
  paymasterDetails: feesDetails,
  maxFeeInGasToken: feeEstimation.suggested_max_fee_in_gas_token,
});

• .withOptions

const res2 = await myTestContract
  .withOptions({
    paymasterDetails: feesDetails,
    maxFeeInGasToken: feeEstimation.suggested_max_fee_in_gas_token,
  })
  .transfer(destinationAddress, cairo.uint256(100));

Development related changes

paymasterDetails?: PaymasterDetails;
maxFeeInGasToken?: BigNumberish;

are added in ExecuteOptions

Checklist:

• Performed a self-review of the code
• Rebased to the last commit of the target branch (or merged it into my branch)
• Documented the changes in code (API docs will be generated automatically)
• Updated the tests
• All tests are passing