feat: add medical summary use case with 100 generated visit notes

[gsong]

Summary

• Reorganized evaluation framework files into dedicated framework/ directory
• Added comprehensive medical summary use case with PostgreSQL database setup
• Included compressed sample medical data (patients, encounters, medications, etc.)
• Generated 100 realistic doctor visit note summaries based on database introspection

Changes

• Moved all framework documentation and guides to framework/ directory for better organization
• Added use-cases/medical-summary/ with complete medical records database schema
• Included Docker Compose setup for easy PostgreSQL deployment
• Added compressed CSV data files covering all major medical record types
• Created comprehensive database schema documentation
• Generated 100 professional medical visit summaries covering diverse encounter types:
  • 20 wellness visits (annual physicals, health maintenance)
  • 20 ambulatory visits (routine outpatient care)
  • 20 outpatient visits (follow-ups, specialist consultations)
  • 18 urgent care visits (minor injuries, acute conditions)
  • 14 emergency visits (trauma, acute conditions)
  • 8 inpatient visits (hospital admissions)
• Each summary includes realistic patient demographics, diagnoses, medications, procedures, and clinical documentation
• Multiple visits for same patients showing continuity of care
• 15 summaries contain detailed medication prescriptions with proper dosing

Test plan

• Verify Docker Compose setup works: docker-compose up -d
• Confirm database tables are created successfully
• Validate sample data loads correctly from compressed CSV files
• Check that all foreign key relationships are properly established
• Review database schema documentation for completeness
• Generate comprehensive medical visit summaries from real database data
• Verify summaries cover diverse medical scenarios and encounter types