Make tests smaller but run more of them in CI #207

Job	Run time
Save-PR-Number	4s
Formatting	23s
CPU-GNUmake	1m 59s
Lint-clang-tidy (EB-OFF)	1h 4m 49s
Lint-codeql	59m 43s
Lint-clang-tidy (EB-ON)	1h 14m 45s
CPU-CMake (ubuntu-latest, Release)	9m 41s
CPU-CMake (ubuntu-latest, Debug)	9m 43s
Lint-codespell	15s
CPU-CMake (macos-latest, Release)	9m 22s
GPU-HIP	11m 44s
GPU-SYCL	1h 11m 13s
GPU-CUDA (11.4)	16m 50s
	5h 30m 31s

Provide feedback