CI/CD components for conda package building

Documentation: CI/CD components

• Create a phoenix CI/CD catalog project (in2p3 gitlab) to store components here
• Implement a conda package building CI/CD component
• Implement a component for uploading the package if different job than conda build ?
• Implement a component for building containers in CI using buildkit
• Implement a component for running tests
• Implement a component for generating documentation
• Implement a component for making a release
• To be clarified: implement a component for entire workflow using other components

FYI @paubert