Credscan: Support suppression in files that does not allow comments, such as JSON documents

[eatsleepcodeplayrepeat]

There is no way of suppressing JSON documents as they do not support comments. Or I have not found documentation on how to use .gdnconfig for CredScan so suppress files.

[chrisnielsen-MS]

Hi @eatsleepcodeplayrepeat

We plan to release a better user experience for suppressions in an upcoming release, but for now there are instructions on how you can do so early here: https://github.com/microsoft/security-devops-azdevops/issues/38#issuecomment-1509461347