Leverage modular DriverResult directly on Driver level

[mrossinek]

What is the expected enhancement?

The third (and final) step of #148 suggests to replace the return objects for all qiskit_nature.drivers with the new modular Property framework. I.e.:

class BaseDriver:
    def run(self) -> DriverResult:
        ...

class FermionicDriver:
    def run(self) -> ElectronicDriverResult:
        ...

class BosonicDriver:
    def run(self) -> VibrationalDriverResult:
        ...

⚠️ Names not final!

The implementation of these CompositeProperty objects (as proposed in #263) allows a straight forward migration using the from_legacy_driver_result methods.

The aforementioned PR also lists some more details which need to be addressed as part of closing this issue.