[clang] [clang-format] Add BreakBeforeTemplateClose option (PR #118046)

[Owen Pan via cfe-commits]

================
@@ -280,6 +281,13 @@ struct ParenState {
   /// was a newline after the beginning left paren.
   bool BreakBeforeClosingParen : 1;
 
+  /// Whether a newline needs to be inserted before the block's closing
+  /// angle < >.
+  ///
+  /// We only want to insert a newline before the closing angle if there also
+  /// was a newline after the beginning left angle.
----------------
owenca wrote:

```suggestion
  /// Whether a newline needs to be inserted before a closing angle `>`.
```

https://github.com/llvm/llvm-project/pull/118046