Add Docker Containerization + README Instructions

[mwihoti]

This PR introduces Docker containerization and support for the Evolution SDK, making it easy for developers to build and run the tool inside a portable and reproducible environment without needing to install Node or TypeScript manually.

Changes

Added Dockerfile for building and running the SDK

Added instructions in the README covering:

      How to build the Docker image
      
      How to run commands using Docker
      
      Optional volume mounts for development

Minor cleanup and documentation improvements where needed

Why This Is Useful

Makes environment setup easier for new contributors

Ensures consistency across systems

Improves developer onboarding

Helps future CI/CD pipelines

Makes the SDK runnable in isolated environments

Testing Done

Built Docker image locally

Successfully ran SDK CLI commands inside the container

Verified that node version + deps resolve properly

Open to suggestions for improvements or additional documentation.