Migrate CF CLI Bosh release to GitHub Action workflow

[a-b]

• Setup devcontainer-based local environment using cached base image
• Use nekto/act to iterate on the pipeline locally
• Extract shepherd leasing option into the separate remote action
• Implenent machanism to sync GHA variables and secrets between repositories

[linux-foundation-easycla[bot]]

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• :white_check_mark: login: a-b / name: Al Berez (719f90fde7d934dbd176b75d677b1e08307e5281)