Eachine EV800/EV800D Spacer

I modified the design of https://www.thingiverse.com/thing:2262741 (Thank you villamany) so that it adjusted more exactly to the glasses. I decided to make the spacer in three pieces, BackSide, it is the part that joins the fresnel lens, FrontSide, the part that joins the screen, and the hooks. This way you do not have to use many supports, only a small part in the BackSide, thus saving us the hassle of having to remove the supports. It is ESSENTIAL to use CAPA height of 0.2mm, so that the final