Adds pull request best practices to CONTRIBUTING.md and references this document + pull request best practices in the pull_request_template.md so all contributors are confronted with this guide before they open a pull request rather than afterward by the bot.
TODO:
[x] ensure the relative path to CONTRIBUTING.md in pull_request_template.md is correct since dependent repos have different layout
Description
Adds pull request best practices to CONTRIBUTING.md and references this document + pull request best practices in the pull_request_template.md so all contributors are confronted with this guide before they open a pull request rather than afterward by the bot.
TODO: