feat: add support for Claude LLM integration across multiple modules

- Introduced `useClaude` option in `AnalysisPipelineOptions` to toggle Claude LLM usage.
- Updated `processProductChunk` and `analyzeProducts` functions to accept and handle `useClaude` parameter.
- Modified argument parsing in various scripts (`bestsellers-by-category`, `mid-range-sellers-by-category`, `top-monthly-sold-by-category`, etc.) to include `--claude` flag.
- Enhanced `analyzeProductsInternal` to differentiate between LLM providers and handle requests to Claude API.
- Added error handling for Claude API responses and ensured proper configuration for using Claude.
- Updated documentation and usage messages to reflect the new `--claude` flag.

.env.example

@@ -12,7 +12,10 @@ AWS_SECRET_ACCESS_KEY=your_aws_secret_access_key
 REDIS_URL=redis://localhost:6379
 LLM_URL=http://localhost:1234/v1
 LLM_MODEL=default
-CACHE_TTL=86400
-GOOGLE_API_KEY=your_google_api_key
-GOOGLE_CSE_ID=your_google_programmable_search_engine_id
-SERPAPI_API_KEY=your_serpapi_api_key_for_google_shopping
+ANTHROPIC_API_KEY=your_anthropic_api_key
+ANTHROPIC_MODEL=claude-3-5-sonnet-20241022
+CACHE_TTL=86400
+GOOGLE_API_KEY=your_google_api_key
+GOOGLE_CSE_ID=your_google_programmable_search_engine_id
+SERPAPI_API_KEY=your_serpapi_api_key_for_google_shopping
+