Update Ci::Catalog::Resources::ValidationService to scan for components

What does this MR do and why?

Updates the Ci::Catalog::Resources::ValidationService to include a new check that makes sure the repository contains at least one component.

• Adds scan_directory_for_components
• Adds a limit argument to fetch_component_paths, and establishes a limit of 50 as a default.
• Adds a catalog_resource_components trait to project to allow us to easily reference a properly structured project that would be a catalog resource with components

This is a broken down MR needed for: #415413 (closed)

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