[llvm] [readtapi] Use OptParser.td for options (PR #72183)

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``````````bash
git-clang-format --diff d1168df2a46e6077d7dd1acc7e6302405dc8d610 ebb21a276f661bd1ae9a3c99ee543c3768c9b98b -- llvm/include/llvm/TextAPI/TextAPIError.h llvm/lib/TextAPI/TextAPIError.cpp llvm/tools/llvm-readtapi/llvm-readtapi.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/tools/llvm-readtapi/llvm-readtapi.cpp b/llvm/tools/llvm-readtapi/llvm-readtapi.cpp
index 3c05c28225..2aae1c464c 100644
--- a/llvm/tools/llvm-readtapi/llvm-readtapi.cpp
+++ b/llvm/tools/llvm-readtapi/llvm-readtapi.cpp
@@ -70,8 +70,8 @@ convertFileToBinary(const StringRef Filename) {
   return createBinary(BufferOrErr.get()->getMemBufferRef());
 }
 
-// Use unique exit code to differentiate failures not directly caused from 
-// TextAPI operations. This is used for wrapping `compare` operations in 
+// Use unique exit code to differentiate failures not directly caused from
+// TextAPI operations. This is used for wrapping `compare` operations in
 // automation and scripting.
 const int NON_TAPI_EXIT_CODE = 2;
 

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https://github.com/llvm/llvm-project/pull/72183