Ventoy-1.0.71 release

[longpanda]

2022/03/11 --- 1.0.71 release

1. VTOY_DEFAULT_IMAGE can be set to F2> to automatically enter F2 browser mode.
   
   
2. Fix the bug when booting FreeBSD 13.0 in F2 browser mode.
   
   
3. Auto use memdisk mode for Memtest86+ and KolibriOS iso file.
   
   
4. Support Easy Recovery Essentials for Win10/Win11.
   
   
5. Suppress Fn hotkey when VTOY_DEFAULT_IMAGE is set to Fn>.
   
   
6. New ISO support (total 830+)