[clang] [LifetimeSafety] Add missing origins stats for lifetime analysis (PR #166568)

[via cfe-commits]

================
@@ -0,0 +1,30 @@
+//===- LifetimeStats.cpp - Miscellaneous statistics related to C++ Lifetime
----------------
DEBADRIBASAK wrote:

Sorry for that. Running `git clang-format` caused this. Corrected now.

https://github.com/llvm/llvm-project/pull/166568