Integrate KEEP model with RunPod Serverless

[arpitdayma123]

This commit introduces the necessary files and modifications to enable the KEEP model to run on RunPod Serverless.

Key changes:

• Added handler.py: Contains the serverless handler function to process video URLs using the KEEP model. It includes logic for video downloading, frame processing, model inference, and output generation.
• Created Dockerfile: Defines the Docker image for the RunPod Serverless environment, including all dependencies, application code, and pre-trained model downloads.
• Updated requirements.txt: Added runpod package and ensured all other necessary dependencies are listed.

These changes allow you to deploy the KEEP model as a serverless endpoint on RunPod, accepting video URLs as input and returning processed videos.