Add Unit Test For - get-unique-words for Trie

[TheSTL]

👽 What is required?

The algorithm is here : get-unique-words

• Follow the ESLint rules strictly
• Follow the filename and folder structure strictly
• Since the Contribution Guide is not ready yet, go through the codebase pattern and add tests accordingly

Thank You!

[garrowp]

I can pick up this one

[ashokdey]

Thanks for taking interest @garrowp, however, we already have #148 and #149. Can you continue with the changes asked in those two PRs?

[garrowp]

Sure! Do you want me to make new PRs or just reference those existing PRs?

[ashokdey]

You can pick up those