Add spec documents for requirements, design, implementation, tasks, e…

[ParaniDharshan04]

…valuation, and testing workflows

• Created spec-requirements.md for generating and refining requirements documents using EARS format.
• Added spec-design.md for creating and refining design documents based on approved requirements.
• Introduced spec-impl.md for implementing functional code according to task lists.
• Developed spec-judge.md for evaluating spec documents and selecting the best solutions.
• Implemented spec-tasks.md for creating and refining task lists based on design documents.
• Added spec-test.md for generating test documents and executable test code aligned with requirements and design.
• Created spec-system-prompt-loader.md to load the spec workflow system prompt.
• Updated kfc-settings.json to include visibility settings for various views.
• Added spec-workflow-starter.md to define the overall spec workflow and its phases.