Docs: Add guidelines for contributing and requesting tools (drivendataorg#456)

Co-authored-by: kolasaniv1996 <kolasaniv1996@users.noreply.github.com>

Author: kolasaniv1996

docs/docs/contributing.md

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 The Cookiecutter Data Science project is opinionated, but not afraid to be wrong. Best practices change, tools evolve, and lessons are learned. **The goal of this project is to make it easier to start, structure, and share an analysis.** [Pull requests](https://github.com/drivendataorg/cookiecutter-data-science/pulls) and [filing issues](https://github.com/drivendataorg/cookiecutter-data-science/issues) is encouraged. We'd love to hear what works for you, and what doesn't.
 
 If you use the Cookiecutter Data Science project, link back to this page or [give us a holler](https://twitter.com/drivendataorg) and [let us know](mailto:info@drivendata.org)!
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+## Requesting New Tools
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+Requests for supporting new or alternative tools should be made in the [discussions section](https://github.com/drivendataorg/cookiecutter-data-science/discussions) of the repository. This allows for community input, upvotes, and better tracking of feature requests.
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