csharp ssrf

[LWSimpkins]

Open source the Microsoft csharp SSRF libraries

• MaD for Azure SDK
  • The sinks are intentionally split into several categories that are used on the Microsoft side
• Library for String Concatenation (generate the fully concatenated string)
• Library for String Concatenation sanitization
• Base SSRF library
• URL Host Barrier library
• Azure Barrier library
• Queries for SSRF with authorization header, and for Azure sinks

TODO:

• Merge existing RequestForgery.qll and RequestForgery.ql with the Microsoft versions
• Add the tests and test resources