Extend two qubit gate error model to cover all Pauli errors

[Naphann]

Currently, two qubit gate error model in QuISP only have 9 possible types of errors.

https://github.com/sfc-aqua/quisp/blob/bd4c706fb9bef21f5bcd36f4b45ad0ec84ac849f/quisp/modules/QNIC/StationaryQubit/StationaryQubit.ned#L57-L66

We probably would want the full 15 possible combinations of {I, X, Y, Z} * {I, X, Y, Z} - II errors, each with assignable weights.