[clang] [analyzer] Add aggregate value tracking to the LifetimeModeling checker (PR #214589)

[Balázs Benics via cfe-commits]

steakhal wrote:

I'll just leave it here that this followup review was a pretty bad experience.
Putting blanket changes into a single commit and linking that to everywhere made it difficult for me to verify how my different comments were reacted on. Especially for the parts where I could not easily search for some context because it was some rename.

https://github.com/llvm/llvm-project/pull/214589