Add an MSVC implementation of ABSL_ATTRIBUTE_LIFETIME_BOUND

https://learn.microsoft.com/en-us/cpp/code-quality/c26816?view=msvc-170

PiperOrigin-RevId: 650044473
Change-Id: I2bf31f1e4b972e890194d21c5a6dcb4ee9993484

absl/base/attributes.h

@@ -816,8 +816,11 @@
 //
 //
 // See also the upstream documentation:
 // See also the upstream documentation:
 // https://clang.llvm.org/docs/AttributeReference.html#lifetimebound
 // https://clang.llvm.org/docs/AttributeReference.html#lifetimebound
+// https://learn.microsoft.com/en-us/cpp/code-quality/c26816?view=msvc-170
 #if ABSL_HAVE_CPP_ATTRIBUTE(clang::lifetimebound)
 #if ABSL_HAVE_CPP_ATTRIBUTE(clang::lifetimebound)
 #define ABSL_ATTRIBUTE_LIFETIME_BOUND [[clang::lifetimebound]]
 #define ABSL_ATTRIBUTE_LIFETIME_BOUND [[clang::lifetimebound]]
+#elif ABSL_HAVE_CPP_ATTRIBUTE(msvc::lifetimebound)
+#define ABSL_ATTRIBUTE_LIFETIME_BOUND [[msvc::lifetimebound]]
 #elif ABSL_HAVE_ATTRIBUTE(lifetimebound)
 #elif ABSL_HAVE_ATTRIBUTE(lifetimebound)
 #define ABSL_ATTRIBUTE_LIFETIME_BOUND __attribute__((lifetimebound))
 #define ABSL_ATTRIBUTE_LIFETIME_BOUND __attribute__((lifetimebound))
 #else
 #else