feat: Implement Text Explainer API using FastAPI for testing explanations

feat: Enhance explanation generation prompt for clarity and engagement

sample text added

feat: Implement UI components for PDF Text Extractor including header, upload section, action buttons, text display, image gallery, and custom CSS

feat: Add text explanation functionality to PDFTextExtractor and UI components

Delete main.py

refactor: Simplify main application entry point and remove unused interface functions

Update app.py

Update requirements.txt

fix: Uncomment server_port in application configuration to enable server functionality

fix: Comment out server_port in application configuration to avoid conflicts

fix: Correct server_port value in application configuration

feat: Add PyMuPDF dependency to requirements.txt

fix: Comment out audioop-lts dependency in requirements.txt

feat: Add initial requirements for the PDF Text Extractor application

feat: Refactor PDF Text Extractor application structure

Add application file

initial commit