[clang] Retrieve BinaryOperator::getOpcode and BinaryOperator::getOpcodeStr via libclang and its python interface (PR #98489)

[Aaron Ballman via cfe-commits]

================
@@ -8955,6 +8960,36 @@ unsigned clang_Cursor_isExternalSymbol(CXCursor C, CXString *language,
   return 0;
 }
 
+enum CX_BinaryOperatorKind clang_Cursor_getBinaryOpcode(CXCursor C) {
+  if (C.kind != CXCursor_BinaryOperator &&
+      C.kind != CXCursor_CompoundAssignOperator) {
+    return CX_BO_Invalid;
+  }
+
+  const Expr *D = getCursorExpr(C);
+  if (const BinaryOperator *BinOp = dyn_cast<BinaryOperator>(D)) {
----------------
AaronBallman wrote:

```suggestion
  if (const auto *BinOp = dyn_cast<BinaryOperator>(D)) {
```

https://github.com/llvm/llvm-project/pull/98489