stand for Stack-chan(M5GoBottom Version)

Stand for stack-chan.

[Stack-chan Project(Github)](https://github.com/meganetaaan/stack-chan)

This stand is designed to fit the stack-chan M5GoBottom version.

Note that the foot size is different from the original stack-chan.

https://github.com/meganetaaan/stack-chan/tree/main/case/contributed/mongonta_case_for_SG90_and_M5GoBottomBoard