Merge branch 'fhennig/array-modelling' into 'v2.0-dev'

docs/source/api/symbolic_language/astnodes.rst

docs/source/backend/objects.rst

src/pystencils/backend/ast/expressions.py

src/pystencils/backend/ast/util.py

src/pystencils/backend/emission.py

src/pystencils/backend/kernelcreation/ast_factory.py

src/pystencils/backend/kernelcreation/freeze.py

src/pystencils/backend/kernelcreation/typification.py

src/pystencils/backend/literals.py

src/pystencils/backend/platforms/sycl.py

src/pystencils/backend/platforms/x86.py

...encils/backend/transformations/erase_anonymous_structs.py

...ils/backend/transformations/hoist_loop_invariant_decls.py

src/pystencils/sympyextensions/pointers.py

src/pystencils/types/types.py

tests/nbackend/kernelcreation/test_freeze.py

tests/nbackend/kernelcreation/test_typification.py

tests/nbackend/test_ast.py

tests/nbackend/test_code_printing.py

tests/nbackend/test_extensions.py