Yamlator

* Added `Pylint` to the `test` workflow pipeline
* Added a new `CodeQL` workflow pipeline
* Added `YAML` as a display option using the CLI
* Updated docstrings in the `validators` package
* Updated `cmd.py` to be a sub package in `yamlator` to improve code readability

* Updated urls in the `README.md` and `setup.py` to reflect the username change

* Added a `Regex` type to the schema to support regex validation
* Added support for `integers` and `floats` in the `Enum` construct
* Fixed bug with the the `Enum` and `Ruleset` construct names that prevented camel case from working
* Updated the source code package from `src` to `yamlator`
* General improvements to existing documentation

* Initial release of the Yamlator package