Altifarm Pico Stand

I participated in the kickstarter of [altifarm's pico](https://altifarm.com/product/pico/) but I would like to not just put them on the wall, but also on my desk. But since they are not that stable, I decided to just print something that keeps them from tilting over. I test-printed a prototype and will now create multiple for my pico's so I can keep them on my window board.

Changelog: 11.1.2021
- Added a "NO HOLE" version that has not hole in the base, based on a suggestion.