[clang] [APINotes][unsafe-buffer-usage] Add [[clang::unsafe_buffer_usage]] support in APINotes (PR #189775)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- clang/test/APINotes/Inputs/Headers/UnsafeBufferUsage.h clang/test/APINotes/unsafe-buffer-usage.cpp clang/include/clang/APINotes/Types.h clang/lib/APINotes/APINotesFormat.h clang/lib/APINotes/APINotesReader.cpp clang/lib/APINotes/APINotesTypes.cpp clang/lib/APINotes/APINotesWriter.cpp clang/lib/APINotes/APINotesYAMLCompiler.cpp clang/lib/Sema/SemaAPINotes.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/APINotes/APINotesFormat.h b/clang/lib/APINotes/APINotesFormat.h
index 411daa9b8..c167be2fa 100644
--- a/clang/lib/APINotes/APINotesFormat.h
+++ b/clang/lib/APINotes/APINotesFormat.h
@@ -24,7 +24,7 @@ const uint16_t VERSION_MAJOR = 0;
 /// API notes file minor version number.
 ///
 /// When the format changes IN ANY WAY, this number should be incremented.
-const uint16_t VERSION_MINOR = 40; // 39 for BoundsSafety; 
+const uint16_t VERSION_MINOR = 40; // 39 for BoundsSafety;
                                    // 40 for [[clang::unsafe_buffer_usage]]
 
 const uint8_t kSwiftConforms = 1;

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https://github.com/llvm/llvm-project/pull/189775