[clang] [LifetimeSafety] Add parameter lifetime tracking in CFG (PR #169320)

[Gábor Horváth via cfe-commits]

https://github.com/Xazax-hun commented:

Could you add a test demonstrating in what order are the parameters' lifetime ends when there are multiple parameters and double check if that is correct? Interestingly, I see different results across clang and gcc so I wonder if this one is not specified. But I think we should make an effort to analyze the same order that we use for execution. 

https://github.com/llvm/llvm-project/pull/169320