introduce GenericASECalculator and ApplyCalculator

[PythonFZ]

• CP2kModel
• Orca
• xTBModel

This new way of defining calculators allows for a setup like

import ipsuite as ips

project = ips.Project()

cp2k = ips.GenericASECalculator(
    module="ase.calculators.cp2k",
    class_name="CP2K",
    file_paths=[
        "GTH_BASIS_SETS",
        "GTH_POTENTIALS",
    ],
    parameter_paths="cp2k.yaml",
)

with project:
    data = None
    ips.ApplyCalculator(
        data=data,
        model=cp2k,
    )

project.build()

• tests
• requires new zntrack release
• documentation
• deprecate old code
• laufband

This does not work with e.g. a calculator like Plumed that uses zntrack.deps to depend on another calculator. But due to the fact that zntrack.deps accepts on and off graph nodes, this won't be an issue.

[PythonFZ]

will do in a later PR