[WIP] Add core functionality to Program.cs for build notes

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Feature]: Implement Program Functionality</issue_title>
<issue_description>### Problem Statement

The Program.cs file needs to implement the tools main functionality.

Proposed Solution

The Program.cs file should be converted to implement the tools core functionality of creating build notes. The https://github.com/demaconsulting/SonarMark/blob/main/src/DemaConsulting.SonarMark/Program.cs should be used as a template for processing and running. Specifically:

• The Main methods handling of context creation, error handling, and calling the Run method
• The public Run method for doing the work - called by unit tests and eventually called by self-validation logic
• The PrintBanner method
• The PrintHelp method
• A ProcessBuildNotes method to create the build notes markdown output

In addition a Validation static class should be created with a Run method, but for now it can just be a stub to get the Program.cs to call it for self-validation. This will be fleshed out in a later PR.

Alternatives Considered

No response

Usage Examples

Benefits

Standardized program entry point logic.

Priority

High - Blocking my use case

Willingness to Contribute

Yes, I can submit a pull request

Additional Context

No response

Checklist

• I have searched existing issues to ensure this is not a duplicate
• I have provided a clear description of the feature
• I have explained why this feature would be useful</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Feature]: Implement Program Functionality #13

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[Malcolmnixon]

@copilot It seems the agentic development stalled - possibly GitHub is experiencing more issues today. Please try starting again