Align imports with Black/isort and add isort config

[dfeen87]

Motivation

• Ensure import formatting satisfies both black and isort style checks so CI/style checks pass.
• Preserve runtime behavior and existing # noqa markers while normalizing import layout across modules.

Description

• Add a .isort.cfg with profile = black to make isort follow Black's import formatting conventions.
• Reformat imports in experiments/__init__.py, experiments/leggett_garg/__init__.py, experiments/process_tensor/__init__.py, experiments/reset_tests/__init__.py, simulations/__init__.py, simulations/markov_comparison.py, and theory/__init__.py to match Black/isort expectations without changing exported symbols.
• Adjust simulations/markov_comparison.py to split the theory.dynamics import so the # noqa: E402 comment remains correctly associated while satisfying isort/black formatting rules.

Testing

• Ran isort --check-only --diff theory/ analysis/ simulations/ experiments/ tests/ and iteratively fixed import ordering until isort --check-only --diff ... returned no errors.
• Ran black --check theory/ analysis/ simulations/ experiments/ tests/ which reported no remaining formatting violations.
• Observed black initially reformatted the seven affected files and subsequent black --check showed the files were stable.

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[chatgpt-codex-connector]

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