How to Include AdvancedTomato Theme in OPNsense Source and ISO Build

[Jhonraushan]

Hi OPNsense Team,

Can you please tell me the correct process to add the AdvancedTomato theme (from misc/theme-advanced) into the OPNsense source code and Set advanced Theme as Default in OPNsense, so it gets included when I build the ISO?

I want to make sure the theme is properly built, installed, and visible in the web interface after installation.

Thank you.

Best regards,
Raushan Patel