[clang] [analyzer] Implement LifetimeModeling checker and refactor UseAfterLifetimeEnd (PR #205951)

[Benedek Kaibas via cfe-commits]

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@@ -788,9 +788,15 @@ def SmartPtrChecker: Checker<"SmartPtr">,
   Dependencies<[SmartPtrModeling]>,
   Documentation<HasDocumentation>;
 
+def LifetimeModeling : Checker<"LifetimeModeling">,
+  HelpText<"Model [[clang::lifetimebound]] annotations for lifetime analysis">,
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benedekaibas wrote:

I have modified the `HelpText` based on the suggested change and how other modeling checkers have their `HelpText`. [3a16279](https://github.com/llvm/llvm-project/pull/205951/commits/3a162799157deab6e7a879bb33766cf61a294514)

https://github.com/llvm/llvm-project/pull/205951