Make F13-F24 and other obscure keyboard keys bindable

[Michelin]

Very convenient feature for people with programmable mouse buttons/ keyboards with additional keys
Arma can become quite cluttered with keybinds, I would deem this an important feature from a PC standpoint although the clickable buttons as in star citizen help a lot in that regard

[Palindrome]

Please, yes, this.

[MIJAMIJAMIJA]

bumping this