Javoha dev

[javoha]

Description

Addition of example for the video tutorial series.

Checklist

• [x] My code follows the PEP 8 style guidelines.
• [x] My code uses type hinting for function and method arguments and return values.
• [x] My code contains descriptive and helpful docstrings which are formatted per the Google Python Style Guidelines.
• [x] I have created tests which entirely cover my code.
• [x] The test code either 1. demonstrates at least one valuable use case (e.g. integration tests) or 2. verifies that outputs are as expected for given inputs (e.g. unit tests).
• [x] New and existing tests pass locally with my changes.