Eachine E013 frame refined

I remixed this version to include a camera mount, hole for the board's antenna, and I moved the screw hole a bit further back for a better fit.

I designed this for the stock camera and board, but I used the special sauce motors and a bigger holding screw. I also used little felt pads for vibration reduction on the board.

I never tested it on stock motors. It might be too heavy for them.

Print it with the included orientation with supports touching buildplate only.