This is a GitHub action for generating GitGitGadget style config. The input is a model configuration file. It may be a javascript file, typscript converted javascript file or a json file (with a .json extension). The output format may be commonJS, javascript (typescript style) or json. All three formats are supported for subsequent loading by the gitgitgadget utilities. Existing values in the config will be changed by environment variables that match the existing config values.
The format of the output file. The output format may be commonJS, javascript (typescript style) or json. All three formats are supported for subsequent loading by the gitgitgadget utilities. Valid values are `common`, `ts` or `json`.