simple recursion tree

[sajjkavinda]

Description:

Simple recursion tree program in python

Fixes #issue_number_here

Type of change:

• [ x] New feature (non-breaking change which adds functionality)

Checklist:

• [x ] My code follows the style guidelines of this project.
• [ x] I have performed a self-review of my own code.
• [ x] I have added tests that prove my fix is effective or that my feature works.
• [x ] New and existing unit tests pass locally with my changes.

Screenshots / Video: