[Feature] Create a `/guides` directory to track beginner friendly documentation and help specific to this project

## Problem
There are instances where newcomers/beginners would benefit from more specific and detailed instructions related to this project than what is present in the standard `README.md`, but expanding the `README.md` file to accommodate this could make it bloated and confusing.

## Description
To resolve this we're going to add a `/guides` directory with an explainer `README.md` file within it, and allow this folder to contain various guides for this repository, as relevant to newcomers and beginners.

Some examples might include:
* How to create new Actions workflows
* Understanding the importance of Semantics

Guides can include detailed instructions and/or relevant links to resources on the web, such as tutorials, dev guides, etc. to help people better understand how to contribute to this project as a beginner.

## Additional context
* https://github.com/creativecommons/search/issues/110

## Implementation

- [x] I would be interested in implementing this feature.