Refactor physics to bubbles and lines

[justgook]

Almost any shape can be represented as bunch of lines, and line to line collisions is easy.. Additionally need to create constraints to join lines together:

1. Static - one master line and others follow it
2. Distance - one master and other keep same distance
3. Range- all try keep in distance range

[justgook]

https://github.com/RandyGaul/cute_headers/blob/master/cute_c2.h - capsule stuff
https://github.com/shakiba/planck.js - Box2D..
http://brm.io/matter-js/docs/classes/Bodies.html