Show normal or uefi boot type on boot screen

[longpanda]

https://www.ventoy.net/en/faq.html

3. How to determine the current boot mode ?
After boot into the Ventoy main menu, pay attention to the lower left corner of the screen:

1.0.84 BIOS www.ventoy.net ===> This means current is Legacy BIOS mode.
1.0.84 UEFI www.ventoy.net ===> This means current is UEFI mode.
1.0.84 IA32 www.ventoy.net ===> This means current is 32bit UEFI mode.
1.0.84 AA64 www.ventoy.net ===> This means current is ARM64 UEFI mode.
1.0.84 MIPS www.ventoy.net ===> This means current is MIPS64EL UEFI mode.