do again the ecs example with beef's ecs and with polymorph

[pietroppeter]

• https://play.nim-lang.org/#ix=4fQP
• https://github.com/beef331/nimtrest/blob/master/yeacs.nim#L128-L160

also now that Ryan has understood what is the issue with polymorph and js backend I should give it another run: rlipsc/polymorph#21

and of course I should take advantage of the fixed p5js bindings!

[pietroppeter]

and it would not be bad to understand how to work with collisions...

[pietroppeter]

this is the new version:

• https://github.com/beef331/nimtrest/blob/master/toys%20of%20toys/ecs.nim

[pietroppeter]

ah right there is https://github.com/GabrielLasso/drawim !