[clang] [clang-tools-extra] [clang-tidy] Add new check `modernize-use-designated-initializers` (PR #80541)

[Piotr Zegar via cfe-commits]

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In-Reply-To: <llvm.org/llvm/llvm-project/pull/80541 at github.com>


================
@@ -0,0 +1,203 @@
+// RUN: %check_clang_tidy -std=c++17 %s modernize-use-designated-initializers %t \
+// RUN:     -- \
+// RUN:     -- -fno-delayed-template-parsing
+// RUN: %check_clang_tidy -check-suffixes=,SINGLE-ELEMENT -std=c++17 %s modernize-use-designated-initializers %t \
+// RUN:     -- -config="{CheckOptions: [{key: modernize-use-designated-initializers.IgnoreSingleElementAggregates, value: false}]}" \
----------------
PiotrZSL wrote:

use new format for config:
```
 -config="{CheckOptions: [{modernize-use-designated-initializers.IgnoreSingleElementAggregates: false}]}"
```

https://github.com/llvm/llvm-project/pull/80541