Add repository structure and Official_pr_Analysis documentation to README

[Copilot]

Updates the main README.md with repository organization and detailed documentation of the Official_pr_Analysis folder per request.

Repository Structure

• Added tree view of all top-level directories (DART, LISSY, METIS-LIS, analysis, docs, scripts, etc.)
• Documented key Python scripts and their purposes

Official_pr_Analysis Documentation

• Purpose: MIMA (Median Income Moving Average) methodology for cross-national poverty rate calculation
• Structure: Breakdown of subdirectories:
  • benchmarks/ - Official government poverty data by country (CA, US, UK, DE, EU)
  • lissy_data/ - LIS microdata outputs and parsing scripts
  • results/ - Analysis outputs and visualizations
  • scripts/ - Analysis and visualization pipeline
• Workflow: 5-step pipeline from LIS data extraction → job parsing → MIMA calculation → parameter optimization → benchmark visualization
• Algorithm: Brief explanation of equivalized income, moving average median, and poverty line computation
• Countries: Canada (MBM), US (Census), UK (HBAI), Germany (Armutsgefährdungsquoten), EU (EU-SILC)

Original prompt

Update the README.mf of the repo to include the structure of the repo, and explain in detail what is happening in the Official_pr_Analysis folder. Edit only the main repo README. leave the rest alone/

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