story: Support simple outputs in the PR comment

[tomwillis608]

Describe the User Story

As an engineer using this action,
So that the action output is more concise,
I want the action to optionally support the simplified output of of the sarif-to-comment application.

Acceptance Criteria

• The action supports an option to use the simplified output of of the sarif-to-comment application.

Definition of Done

• Acceptance criteria met
• Usability tests passed - this user story should be easy to use by real users
• Code refactored for clarity - code must be clean, self-documenting code
• Dependency Rule followed - higher-level code should not depend directly on lower-level code
• Source code merged
• Unit test coverage of our code > 90%
• Security reviewed and reported - includes vulnerability and compliance scanning
• Code quality checks passed
• Build process updated if needed
• API documentation updated if needed

Additional Information

Tasks

• Add tests
• Add option
• Document option

Related Feature Request

#143