Move flux directory from videoag_infra/tools

flux/.gitignore

flux/Dockerfile

flux/README.md

flux/_update_flux.sh

flux/_update_flux_loop.sh

flux/bootstrap_cluster.sh

flux/create_dummy_secrets.py

flux/delete_cluster.sh

flux/docker-compose.yml

flux/install_dependencies.sh

flux/local_flux_key

flux/local_flux_key.pub

flux/replace_image_paths.py

flux/run_cluster.sh