Cleanup and completion of major refactor

[AlexanderFengler]

This is another step towards towards a solid refactor of ssm-simulators which makes the package much more modular.

The focus here was on streamlining the codebase, dropping unnecessary tests and unnecessary near-duplicate functionality.

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Codecov Report

❌ Patch coverage is 93.50649% with 15 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
ssms/config/model_config_builder.py	86.53%	7 Missing ⚠️
ssms/transforms/simulation/common.py	90.00%	3 Missing ⚠️
...s/config/generator_config/data_generator_config.py	77.77%	2 Missing ⚠️
ssms/basic_simulators/drift_functions.py	92.85%	1 Missing ⚠️
..._simulators/modular_parameter_simulator_adapter.py	85.71%	1 Missing ⚠️
ssms/transforms/base.py	87.50%	1 Missing ⚠️

Flag	Coverage Δ
unittests	90.99% <93.50%> (-0.56%)	⬇️

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Files with missing lines	Coverage Δ
ssms/basic_simulators/parameter_adapters/base.py	100.00% <100.00%> (+12.50%)	⬆️
...ms/basic_simulators/parameter_adapters/registry.py	88.33% <100.00%> (-0.20%)	⬇️
ssms/basic_simulators/simulator.py	79.26% <100.00%> (+1.08%)	⬆️
ssms/basic_simulators/simulator_class.py	81.46% <100.00%> (+1.25%)	⬆️
ssms/cli/generate.py	96.92% <100.00%> (-0.10%)	⬇️
ssms/config/_modelconfig/angle.py	100.00% <ø> (ø)
ssms/config/_modelconfig/base.py	100.00% <ø> (ø)
ssms/config/_modelconfig/conflict.py	100.00% <ø> (ø)
ssms/config/_modelconfig/ddm.py	100.00% <ø> (ø)
ssms/config/_modelconfig/ddm_par2.py	100.00% <100.00%> (ø)
... and 31 more

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