Add KnowBe4 "Password Exposure Test" tool for Windows AD

[maxvarm]

https://www.knowbe4.com/password-exposure-test

A free and easy-to-use GUI tool to find authentication-related weaknesses in AD:

• Weak, cleartext, or reused passwords (using local wordlist)
• Breached or exposed passwords (using KnowBe4 services)
• LM-only or DES-only passwords, missing preauthentication, some other AD misconfiguration
• https://support.knowbe4.com/hc/en-us/articles/360013570174-Password-Exposure-Test-PET-#FailureTypes

I used it myself, was helpful in finding poorly-protected privileged accounts.