Welcome to JavaScript community

Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that p

It'd be neat to have a benchmark to test our diffing needs — perf is a feature, and we should be able to catch regressions.

Given this would need to run in the browser, we'd probably need some tooling around this. I was thinking it'd be cool to run a headless Chrome instance through puppeteer, and use the [nanobench](https://github.com/mafintosh/nano

👽 What is required?

The algorithm is here : check-binary-tree-subtree-another-binary-tree

• Follow the ESLint rules strictly
• Follow the filename and folder structure strictly
• Since the Contribution Guide is not ready yet, go