Enable I (isort) rule

benchmarks/bench_translations.py

doc/conf.py

examples/curve-pot.py

examples/curve.py

examples/expansion-toys.py

examples/sym-exp-complexity.py

pyproject.toml

setup.py

sumpy/__init__.py

sumpy/array_context.py

sumpy/assignment_collection.py

sumpy/codegen.py

sumpy/cse.py

sumpy/derivative_taker.py

sumpy/distributed.py

sumpy/e2e.py

sumpy/e2p.py

sumpy/expansion/__init__.py

sumpy/expansion/diff_op.py

sumpy/expansion/level_to_order.py