feat: integrate text classification pipeline for dynamic fallacy detection

feat: switch from OpenAI to Google LLM for structured output in text classification

feat: add google_api_key parameter to ChatGoogleGenerativeAI instantiation

feat: implement annotation rendering functions for text highlighting and layout creation

feat: add Markdown transcription prompt for document formatting

feat: add parser utilities for cleaning Markdown and encoding PDFs to base64

feat: enhance llm instantiation with structured imports and additional Google LLM configuration

feat: implement rebuttal structure with dynamic content generation for misinformation analysis

feat: add prompts for climate misinformation analysis and paraphrasing

refactor: streamline chunk creation by removing total_chunks parameter and updating chunk handling

refactor: simplify context enrichment by removing window context and integrating text splitter. Window context already in text_spliter's chunk_overlap parameter.

Initial commit: add project structure, core functionality, and dependencies for climate misinformation detection tool