[clang] [clang-format] Add options to control wrapped lambda brace indent. (PR #143249)

[Björn Schäpers via cfe-commits]

================
@@ -1334,12 +1334,15 @@ unsigned ContinuationIndenter::getNewLineColumn(const LineState &State) {
            Style.IndentWidth;
   }
 
-  if (Style.BraceWrapping.BeforeLambdaBody &&
-      Style.BraceWrapping.IndentBraces && Current.is(TT_LambdaLBrace)) {
+  if (Style.BraceWrapping.BeforeLambdaBody && Current.is(TT_LambdaLBrace)) {
+    const auto Nested = Current.NestingLevel != 0;
----------------
HazardyKnusperkeks wrote:

```suggestion
    const auto Nested = Current.NestingLevel > 0;
```
Should be the same, but can't let people wonder if `NestingLevel` can be negative.

https://github.com/llvm/llvm-project/pull/143249