Read The Docs should be optional during Bake

[smk4664]

Environment

• cookiecutter-nautobot-app version: 1.0.0

Proposed Functionality

Currently all baked cookies will include RTD settings and CI components. I am proposing to make this optional.

Use Case

Baked cookies immediately fail CI if RTD is not setup. Not all apps are immediately published to RTD, and some may not get them at all. Currently we have to remove RTD from the CI if not using. This also allows us to bake with it off, then at a later time re-bake with it turned on.