Create DeltaCode documentation on ReadTheDocs

[mjherzog]

The primary DeltaCode documentation is currently at the top of the AboutCode website on ReadtheDocs (RTD). It should be moved to its own RTD website. This task will also:

• Include cross-checking it with the Wiki documentation and then removing the Wiki pages
• Versioning the DeltaCode RTD website in sync with the code.

[ankit2001]

Do u want a separate blog for documentation ??

[mjherzog]

Our goal here is to move the DeltaCode documentation from https://aboutcode.readthedocs.io/en/latest/deltacode/index.html to https://readthedocs.org/projects/deltacode/.
This will also require moving the corresponding file from https://github.com/nexB/aboutcode/tree/master/docs/source/deltacode to https://github.com/nexB/deltacode/tree/develop/docs.

[ankit2001]

okk thanks @mjherzog

[AyanSinhaMahapatra]

Also remove the old wikis and only link to the respective RTD pages for all of the wiki pages.

[mjherzog]

Please move the existing RTD doc from AboutCode to DeltaCode on RTD.org. Ayan can assist you as needed.

[chinyeungli]

Documentation is moved to https://deltacode.readthedocs.io/en/latest/deltacode/index.html#