examples: Add an example notebook for ADER-FD schemes #6591

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	32m 28s
pytest-ubuntu-py311-gcc11-noomp-adjoint	28m 9s
pytest-ubuntu-py38-gcc12-omp-base	32m 56s
pytest-ubuntu-py38-gcc12-omp-adjoint	27m 30s
pytest-ubuntu-py37-gcc7-omp-base	33m 49s
pytest-ubuntu-py37-gcc7-omp-adjoint	28m 37s
pytest-ubuntu-py310-gcc10-noomp-base	32m 6s
pytest-ubuntu-py310-gcc10-noomp-adjoint	27m 24s
pytest-ubuntu-py312-gcc13-omp-base	45m 44s
pytest-ubuntu-py312-gcc13-omp-adjoint	38m 43s
pytest-ubuntu-py39-gcc9-omp-base	32m 45s
pytest-ubuntu-py39-gcc9-omp-adjoint	27m 41s
pytest-osx-py312-clang-omp-base	1m 43s
pytest-docker-py39-gcc-omp-base	33m 16s
pytest-docker-py39-gcc-omp-adjoint	25m 20s
pytest-docker-py39-icx-omp-base	29m 12s
pytest-docker-py39-icx-omp-adjoint	26m 8s
	8h 23m 31s

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