refactor: custom decimals - solady - factory

[hexshire]

1. Migration to Solady:

   • Replaced OpenZeppelin dependencies with their Solady equivalents
   • Changed SafeERC20 and SafeCast from OpenZeppelin to Solady versions
   • Updated interfaces and types to use Solady versions

2. Factory Changes:

   • Modified deployXERC20 function to include _decimals parameter
   • New deployXERC20WithLockbox function that combines XERC20 and Lockbox deployment in a single transaction
   • Removed separate deployLockbox function
   • Updated deployment logic to use CREATE3.deployDeterministic

3. XERC20 Changes:

   • Added decimals parameter in constructor
   • Updated ownership logic to use Solady version
   • Improved error handling and events

4. Lockbox Changes:

   • Simplified ERC20 interface using address instead of IERC20
   • Updated transfer functions to use Solady versions
   • Improved native token handling

5. Test Updates:

   • Adapted tests to use new Solady interfaces
   • Updated mocks and expectations
   • Improved test coverage

6. Configuration Improvements:

   • Updated deployment configuration file to include decimals
   • Improved documentation and comments

7. Internal Review Fixes