New Page: Joystick Control

[mithi]

related to #117

Page idea 1: Inverse Kinematics Page joystick

It would be nice if we can control 2 or 3 or 4 parameters at the same time

by using a 2 dimensional slider, and 2 or 4 keys (up and down button, left and right)
https://codepen.io/tyler-murphy/pen/tHsAu

ideas

1. control rx and ry at the time
2. control tx, ty, tz at the same time

Nipple js (virtual joystick)

• https://github.com/loopmode/react-nipple
• https://github.com/yoannmoinet/nipplejs