Add C# JWT rules: enforce token verification and no hardcoded secrets (#195)

* removed missing-secure-java

* httponly-false-csharp

* use-of-md5-digest-utils-java

* removing use-of-md5-digest-utils and httponly-false-csharp

* jwt-hardcoded-secret-csharp

* jwt-decode-without-verify-csharp

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Co-authored-by: Sakshis <sakshil@abc.com>

Author: 2 people