DOC: Add a Contributing and Contributors Readme

[JosephDYork]

Create a Readme that outlines a quickstart for Open source contributors. This should include the following:

For the Contributing Readme:

• Setting up a proper python dev environment, using Python's built in virtual environment modules. This should include package and development prerequisites. Including formatters, linters, and type checking packages.
• Expectations about how issues are to be opened and handled. Tags, issue tracking, and linking PR's.
• Expectations about how contributions are handled. Forking the repo, opening a PR, and attaching all PR's to existing issues.

For the Contributors Readme:

• A list of all package committers with at least one merged commit, their github handles, and if applicable their name or associated company.