Allow manual dispatch of CI #259

Job	Run time
Save-PR-Number	3s
Formatting	13s
Lint-clang-tidy (EB-OFF)	39m 54s
Lint-clang-tidy (EB-ON)	26m 28s
CPU-GNUmake	1m 22s
Lint-codeql	17m 14s
CPU-CMake (ubuntu-latest, Release)	39m 37s
CPU-CMake (ubuntu-latest, Debug)	27m 44s
Lint-codespell	8s
CPU-CMake (macos-latest, Release)	50m 57s
GPU-SYCL	48m 19s
GPU-HIP	8m 47s
GPU-CUDA (11.4)	24m 1s
	4h 44m 47s

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