This function saves the current `_variables.yml` file from an existing froggeR Quarto project. This provides a safety catch to prevent unintended overwrite if the system-level configuration file exists.
Details
The function will attempt to create a system-level configuration file from the current froggeR Quarto project. If the system-level configuration file already exists, the user will be prompted prior to overwrite.
Examples
# Write the _variables.yml file
if (interactive()) save_variables()