feat: add token factory

[huyhuynh3103]

Description

This pull request introduces a new test suite for the TokenFactory contract to ensure the correct deployment and configuration of various token types. The tests verify the token name, symbol, and decimals for each deployed token.

Added test suite for TokenFactory:

• test/factory/TokenFactory.t.sol: Added a new contract TokenFactoryTest that includes test cases for deploying and validating the configuration of AXS, SLP, USDC, and WETH tokens. The _assertTokenConfig helper function was implemented to assert the correctness of token properties such as name, symbol, and decimals.

Checklist

• I have clearly commented on all the main functions following the NatSpec Format
• The box that allows repo maintainers to update this PR is checked
• I tested locally to make sure this feature/fix works