[style] clang-format all c++ code (#9305)

- sh build-support/clang-format.sh  to  clang-format all c++ code

be/test/plugin/example/plugin_example.cpp

@@ -35,7 +35,7 @@ int close(void*) {
 extern "C" {
 #endif
 
-declare_plugin(PluginExample){nullptr, &init, &close, 3, nullptr, nullptr} declare_plugin_end
+declare_plugin(PluginExample) {nullptr, &init, &close, 3, nullptr, nullptr} declare_plugin_end
 
 #ifdef __cplusplus
 }