DTU Case

This is an adaptations of the main box from: https://www.thingiverse.com/thing:5749709

- Added space for some capacitors
- Removed the 2 side holes inside the radio space
- Change the shape of the radio module exit to be able to fit in directly mounted from inside
- Added more internal space for wider boards
- Removed Sun image

Big thanks to @rihi for making this awesome small model!

Assembly guide: https://hilber.co.at/opendtu/verry_simple_assembly_manual.pdf