Improve documentation and Role Definition logic

This release provides the following updates to the module:

• Updated README to provide additional guidance on how to use the module.
• The variable es_archetype_library_path is now optional, allowing the module to be run with only specifying an input value for es_root_parent_id.
• Role Definitions are now created with a predicatable UUID generated from the template name value and the scope of the deployment, using the uuidv5() function. This is a breaking change as the creation of a new UUID will force recreation of existing Role Definitions, however this was deemed necessary to allow multiple Role Definition deployments from a single template, and the ability to deploy the module multiple times in a single Tenant.