Windows: macro redefined

[vtorri]

ewarnings:

• ../src/bin/ui/shortcuts/shortcuts.h:49: warning: "MOD_SHIFT" redefined
  49 | #define MOD_SHIFT (1 << 0)
• ../src/bin/ui/shortcuts/shortcuts.h:51: warning: "MOD_ALT" redefined
  51 | #define MOD_ALT (1 << 2)

see:

https://learn.microsoft.com/en-us/windows/win32/inputdev/wm-hotkey

I think that :

• these macro should be an enum
• they should a prefix, like EFLT or osmething like that

Vincent