Add loader and processor modules with documentation and output files

- Implemented loader in `modules/loader.py` to download HTML pages using curl and urllib.
- Created processor in `modules/processor.py` for processing the text of the Russian Criminal Code (УК РФ).
- Added README files for both loader and processor explaining their functionality and usage.
- Generated output files including original text, prepared text, and subject index in CSV and JSON formats.

.gitignore

@@ -8,3 +8,4 @@ wheels/
 
 # Virtual environments
 .venv
+cache/