Felupe

Changed
- Update actions used in CI/CD workflows.

Changed
- Remove `setup.cfg`, change `pyproject.toml` and store the version tag only once within the source code (`__about__.py`).

Fixed
- Fix init if `tensortrax` is not installed.

Fixed
- Fix version string.

Added
- Add Total-Lagrange `UserMaterialHyperelastic(fun, parallel=False, **kwargs)` based on optional `tensortrax`. Only available if `tensortrax` is installed.
- Add constitutive isotropic hyperelastic model formulations to be used with `UserMaterialHyperelastic()` (`constitution.ogden(C, mu, alpha)`, etc.).

Changed
- Enhance plotting with custom `x`- and `y`-data in `CharacteristicCurve.plot(x, y)` and allow a list of items for force evaluation in `CharacteristicCurve(items=[...])` to be passed.
- Enhance `math.linsteps(points=[0, 5, 0], num=[5, 10])` by supporting a list of substeps.
- Enhance compression of shear loadcase: Apply the compression on the bottom and the top `dof.shear(compression=(0, 0))`.