Add JUnit formatter #78

Job	Run time
build-and-test (native, windows-latest)	1m 44s
build-and-test (native, ubuntu-latest)	47s
build-and-test (llvm-18, macos-13)	2m 9s
build-and-test (llvm-18, ubuntu-latest)	53s
build-and-test (llvm-18, windows-latest)	2m 6s
build-and-test (gcc-14, macos-15)	43s
build-and-test (llvm-18, macos-15)	45s
build-and-test (gcc-14, ubuntu-latest)	57s
build-and-test (gcc-14, macos-13)	1m 20s
build-and-test (native, macos-15)	32s
Publish Tests Results	14s
	12m 10s

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