Create StructOrUnionSpecifier.c #4500

Job	Run time
static-check (ubuntu-latest, useless-parens)	37s
static-check (ubuntu-latest, format)	43s
setup	18s
build-pwsh (macos-latest, Cpp)	4m 2s
build-pwsh (macos-latest, CSharp)	2m 59s
build-pwsh (macos-latest, Dart)	3m 11s
build-pwsh (macos-latest, Go)	3m 26s
build-pwsh (macos-latest, Java)	2m 15s
build-pwsh (macos-latest, JavaScript)	2m 2s
build-pwsh (macos-latest, PHP)	2m 19s
build-pwsh (macos-latest, Python3)	2m 20s
build-pwsh (windows-latest, Cpp)	4m 39s
build-pwsh (windows-latest, CSharp)	4m 42s
build-pwsh (windows-latest, Dart)	2m 8s
build-pwsh (windows-latest, Go)	3m 24s
build-pwsh (windows-latest, Java)	3m 4s
build-pwsh (windows-latest, JavaScript)	2m 26s
build-pwsh (windows-latest, PHP)	2m 59s
build-pwsh (windows-latest, Python3)	2m 16s
build-pwsh (ubuntu-latest, Cpp)	2m 38s
build-pwsh (ubuntu-latest, CSharp)	1m 26s
build-pwsh (ubuntu-latest, Dart)	1m 11s
build-pwsh (ubuntu-latest, Go)	1m 16s
build-pwsh (ubuntu-latest, Java)	1m 57s
build-pwsh (ubuntu-latest, JavaScript)	1m 8s
build-pwsh (ubuntu-latest, PHP)	1m 16s
build-pwsh (ubuntu-latest, Python3)	48s
	1h 1m 30s

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