WHO Tuberculosis Rifampicin Resistant Import Data

[pravnkumar-cloudsufi]

PR Checklist: https://docs.google.com/spreadsheets/d/1DP2SvoEwoU6VXvKucE9xiABKRVDzEx-D/edit?usp=drive_link&ouid=112402773742366011389&resourcekey=0-AaGcMXwYDzrz9obQi2_JbQ&rtpof=true&sd=true

[gemini-code-assist]

Code Review

This pull request introduces a new statistical variable import for WHO Tuberculosis treatment outcomes of people with rifampicin-resistant TB. The feedback identifies several critical consistency issues, including duplicate files (such as mainfest.json and who_data_download_tuberculosis_rifampicin_resistant.py), mismatched script and directory paths between manifest.json and README.md, and incorrect test data references. Additionally, the data download script should raise exceptions on HTTP errors to fail loudly in automated environments rather than returning silently, and hardcoded paths should be avoided to prevent brittle execution.