Add Multi-Stage Dockerfile for Efficient Building and Running of Project

[rishawsingh]

This pull request includes a multi-stage Dockerfile to streamline the process of building and running the project. The Dockerfile is designed to:

• Minimize image size by separating the build and runtime stages
• Install necessary dependencies and build the application in the builder stage
• Run the application in a lean production stage

Key changes:

• Added a multi-stage Dockerfile to the repository
• Included steps to install build dependencies, Rust, and required Python packages
• Ensured that the application entry point is correctly set to /app/src/paramit/cli/init.py

This Dockerfile will help improve the efficiency of building and deploying the application, making it easier to manage dependencies and reduce the final image size. If there are any suggestions or modifications needed, please let me know!