[clang] [analyzer] Move the lifetime checkers from alpha.cplusplus to alpha.core (PR #216739)

[Benedek Kaibas via cfe-commits]

benedekaibas wrote:

> LGTM. Note that `UseAfterLifetimeEnd` and `LifetimeModeling` were shipped in Clang 23. The modeling checker is hidden, but the `UseAfterLifetimeEnd` is exposed and we might have users using it.
> 
> We should mention this in the release notes under the Moved checkers section what was renamed to what.

Before merging I have reviewed all the comments and found that I did not address this one. I have added the asked explanation to the release notes, here: [68fa1e1](https://github.com/llvm/llvm-project/pull/216739/commits/68fa1e10f0fcd87f929689ad9aced1d35462e23f)

https://github.com/llvm/llvm-project/pull/216739