Enhancement: Support for enabling debug logs via flags

Is your feature request related to a problem? Please describe. If I'm trying to debug how detect-secrets work then I need to run it with DEBUG=detect-secrets which lint-staged isn't friendly with. Instead, I'd want to pass it some flags like --debug in order to enable debugging.

Describe the solution you'd like

1. Add a --debug flag to enable debugging
2. This should enable debug dynamically via debug.enable('detect-secrets')
3. Discard the flag from process.argv so it doesn't get passed to the actual detect-secrets-hook tool

Describe alternatives you've considered Open to other ideas