refactor(readme): add pipeline and release badges

README.md

 # JupyterLab Reference Architecture
 
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 [JupyterLab](https://jupyterlab.readthedocs.io/en/3.4.x/) is a flexible development environment for notebooks, code, and data. It provides a web-based interface for data science, computing, and machine learning. Thanks to its modular design, it is also highly expandable.
 
 Using the JupyterLab reference architecture, you can provision a virtual machine hosting a JupyterLab instance initialized within a Docker container. The reference architecture also enables optional GPU usage.