[FEAT]: Add Mini Pupper 2 demo code and technical report for FREISA

[OrsoEric]

📑 Description

Adding demo code and installation guide which was mentioned in the FREISA Technical Report on hackster.io

✅ Checks

• [x] My pull request adheres to the code style of this project
• [x] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [x] All the tests have passed

ℹ Additional Information

[gmacario]

@OrsoEric please make sure the source code passes the Super-Linter checks.

I would also suggest to change the folder where you upload your files according to the following scheme:

• Source code under /code
• Documentation under /docs
• Images and other resources under /assets

Thank you in advance!