Having performance issue in keyboard.type API #536

Version
"@nut-tree/nut-js": "^3.1.2"

Short overview
Having Performance issue while passing string characters in keyboard.type API

Detailed description
keyboard.type API now having performance issue while passing strings. But works cool while passing keyCode instead of string.
try to call list of strings and list of keycodes in a loop of 1000 Iteration it we can see the difference.