PRP: Secret extractor for NATS NKeys

[tyler92]

• Secret name: NATS NKeys
• Risk in exposing the secret: Attackers can impersonate NATS Accounts and get access to NATS resources
• Validation method, if any: none
• Resources:
  https://docs.nats.io/running-a-nats-service/configuration/securing_nats/auth_intro/nkey_auth

To generate a User NKEY:

nk -gen user -pubout

SUACSSL3UAHUDXKFSNVUZRF5UHPMWZ6BFDTJ7M6USDXIEDNPPQYYYCU3VY
UDXU4RCSJNZOIQHZNWXHXORDPRTGNJAHAHFRGZNEEJCPQTT2M7NLCNF4

The first output line starts with the letter S for Seed. The second letter, U stands for User. Seeds are private keys; the second line starts with the letter U for User and is a public key which can be safely shared.

[github-actions]

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