dsl: Introduce ability to define Functions on Subdomains #7266

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	54m 34s
pytest-ubuntu-py311-gcc11-noomp-adjoint	40m 5s
pytest-ubuntu-py312-gcc12-omp-base	1h 9m 50s
pytest-ubuntu-py312-gcc12-omp-adjoint	51m 17s
pytest-ubuntu-py39-gcc7-omp-base	54m 0s
pytest-ubuntu-py39-gcc7-omp-adjoint	40m 49s
pytest-ubuntu-py310-gcc10-noomp-base	53m 28s
pytest-ubuntu-py310-gcc10-noomp-adjoint	39m 56s
pytest-ubuntu-py312-gcc13-omp-base	1h 10m 18s
pytest-ubuntu-py312-gcc13-omp-adjoint	51m 21s
pytest-ubuntu-py39-gcc9-omp-base	54m 49s
pytest-ubuntu-py39-gcc9-omp-adjoint	39m 25s
pytest-osx-py312-clang-omp-base	36m 2s
pytest-docker-py39-gcc-omp-base	48m 15s
pytest-docker-py39-gcc-omp-adjoint	36m 12s
pytest-docker-py39-icx-omp-base	48m 36s
pytest-docker-py39-icx-omp-adjoint	43m 5s
	13h 52m 2s

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