Implement SplineC2RTOMPTarget template class #44

Job	Run time
macos (macOS-GCC11-NoMPI-Real)	37m 36s
spack-centos-stream (GCC11-NoMPI-Debug-Real)	29m 18s
linux (GCC9-NoMPI-Debug-Real)	24m 49s
spack-centos-stream (GCC11-NoMPI-NoOMP-Real)	29m 26s
linux (GCC9-NoMPI-NoOMP-Real)	29m 10s
spack-centos-stream (GCC11-NoMPI-NoOMP-Complex)	28m 49s
linux (GCC9-NoMPI-NoOMP-Complex)	27m 29s
spack-centos-stream (GCC11-NoMPI-Sandbox-Real)	7m 4s
linux (GCC9-NoMPI-Sandbox-Real)	6m 3s
linux (GCC9-MPI-Gcov-Real)	1h 2m 0s
linux (GCC9-MPI-Gcov-Complex)	43m 33s
linux (GCC11-NoMPI-Werror-Real)	33m 22s
linux (GCC11-NoMPI-Werror-Complex)	29m 13s
linux (GCC11-NoMPI-Werror-Real-Mixed)	37m 12s
linux (GCC11-NoMPI-Werror-Complex-Mixed)	35m 47s
linux (Clang14-NoMPI-ASan-Real)	32m 21s
linux (Clang14-NoMPI-ASan-Complex)	33m 14s
linux (Clang14-NoMPI-UBSan-Real)	37m 3s
linux (Clang16-NoMPI-Offload-Real)	39m 22s
	10h 2m 51s

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