We need to add infrastructure for cleaning up old test projects so they don't continue to cost us money. The work involved should be:

1. Updating this module with additional inputs:
   • A provided folder ID to delete all projects under (see Add script for deleting all projects within a folder #306 for reference) unless
   • A provided exclude_label value is provided (ex. exclude_labels: {cft-testing: persistent})
2. Adding a config in infra/terraform/test-org/test-cleanup/ which sources the project cleanup module and instantiates it on our org. Work began on this here, please pick up from that PR.