The pull request introduces a new script, constructorSizeCheck.ts, to the scripts/ci directory in the token-bridge-contracts repository. This script is designed to perform a constructor size check on certain contracts due to the atomic token bridge creator implementation.

The script utilizes the hardhat library and defines a constant CONTRACTS_TO_EXPECTED_CONSTRUCTOR_SIZE, which is a record of contract names and their expected constructor sizes. The main function of the script initiates the constructor size check by iterating over the entries in CONTRACTS_TO_EXPECTED_CONSTRUCTOR_SIZE. It retrieves the constructor bytecode for each contract, calculates its length, and throws an error if the length does not match the expected length.

The script also includes two helper functions: _getConstructorBytecode and _lengthInBytes. The former is used to extract the constructor bytecode from the creation and deployed bytecode of a contract, while the latter calculates the length of the constructor bytecode in bytes.

If no issues are found during the constructor size check, a success message is logged to the console, indicating that the contracts have passed the constructor size check.