[clang] [llvm] [clang][ssaf][NFC] Move SSAF from Analysis/Scalable/ to ScalableStaticAnalysisFramework/ (PR #186156)

[Balázs Benics via cfe-commits]

steakhal wrote:

@ziqingluo-90 raised that maybe we should keep the `Analyses` directory separate from `Core`.
His argument was that it would follow more closely what the Static Analyzer has with its Core, Checkers and Frontend.
@aviralg @jkorous-apple WDYT?

https://github.com/llvm/llvm-project/pull/186156