corne oled (full) cover

This is a remix from the original to hide the MCU and the battery (and protect it in transportation).
I use it with a 301230 battery, a nice!nano and 0.91" Oled display (128x32).

I had to move the display hole from the original design because it was mis-placed for my usage.

I've also added a small place to glue a cylindric magnet (10x3mm) but I don't know if I'll use it one day... Today, the cover stick as it ¯\\\_(ツ)_/¯