Precise project license

[szpak]

I've bumped into that project evaluating existing solutions for Keycloack & hibp integration. Your project looks very sensible, but unfortunately, there is no license specified, so I don't know, if I can use it (or adapt to my needs).

Could you add a license file to the repository (or at least mention here what was your intention - e.g. MIT or Apache2.0)?