Trie Implementation python

[namitamutha]

Description

Added code for trie data structure in python, fixes #411

Type of change

Python file added

Please delete options that are not relevant

• [Y] New feature (non-breaking change which adds functionality)
• [Y] This change requires a documentation update

Checklist:

• [Y] I have read the contribution guidelines before making this PR.
• [Y] My code follows the style guidelines of this project
• [Y] I have performed a self-review of my own code
• [Y] I have commented in my code, particularly in hard-to-understand areas
• [Y] I have made corresponding changes to the documentation (Language folder or any other readme instructed to)
• [Y] My changes generates no new warnings
• [Y] I have added tests that prove my fix is effective or that my feature works

[kaustubhgupta]

Fill the PR template properly and update the readme file for the language

[namitamutha]

I've done the changes, can you check?