Adds directional keybindings for scrolling at two different speeds.
Anyone having used Vim will be familiar with the keys, as they are respectively h, j, k, and l for left, down, up, and right scrolling. The modifier key shift can be held down for bigger jumps.
Additionally, the keys g and G scrolls the page fully to the top or the bottom respectively.
Fixed scrolling while input fields are in focus. Now the page will not scroll while typing stuff in input fields, like the google search bar, the youtube search bar, and so on.
