[Pimss]

Title

Adding NetlistCircuit, a class importing netlist into SparseLinearDAE format.
This ease the process of simulating electrical system, but also any kind of physics with equivalent circuit.
This PR needs pathsim version above commit pathsim/pathsim@e34add6 to work

Modifications

        modified:   pyproject.toml                (added Elecsolver, for netlist numpy sparse formulation)
        modified:   src/pathsim_rf/__init__.py    (import of NetlistCircuit and added comments)
        modified:   README.md                     (added NetlistCircuit to table)
        
        added:      docs/source/examples/example_netlist_circuit.ipynb     (example for a LC filter import)
        added:      docs/source/examples/transformer_thermal_pathsim.ipynb (transformer with k coupling and thermal model)
        added:      src/pathsim_rf/circuit.py                              (NetlistCircuit class addition)
        added:      tests/test_circuit.py                                  (tests for NetlistCircuit class)

Tests

• python -m unittest discover

Ran 84 tests in 5.044s

OK (skipped=1)

• Added tests for new classes

[Pimss]

The rest is up to the users, I am currently running simulations for a PMSM with speed control, anti-windup, field weakening, clarke and park transform and cable and filter simulation in pathsim under 5 minutes. I am very happy

[williampiat3]

@milanofthe ElecSolver>=2.2.1 is a python lightweight sparse linear system builder for electric systems (or anything that can be expressed in a similar circuit form), it only needs numpy and scipy (I removed networkx in the 2.2.0 release to make it minimal).
In case you were worried about adding deps to pathSim, this one does not add extra packages (except itself)