Adds more documentation and guidelines.

[aerorahul]

Description
This PR:

• uses the Furo sphinx style as it makes it look a lot cleaner (personal opinion). The documentation from this PR is viewable here
• adds guides in the documentation
• also adds references to API
• Adds language for tools we use for checking norms (isort, black and flake8). This should make @HenryWinterbottom-NOAA happy. The next PR will reformat to remove the errors from black and flake8.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• pytests

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes need updates to the documentation. I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing tests pass with my changes
• Any dependent changes have been merged and published

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (develop@528f5ab). Click here to learn what that means.
The diff coverage is n/a.

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