Add Twilio integration for TURN server configuration in WebRTC setup, update video attributes, and create .gitignore for environment files and cache.

Implement real-time line detection application with Streamlit and OpenCV. Features include webcam input, interactive HSV color adjustment, multiple line detection algorithms (Hough, Adaptive Hough, Rotated Rectangle, Fit Ellipse, RANSAC), customizable region of interest, and confidence estimation. Includes necessary modules for color detection, line detection, and PID control.