Functions for `Hypergraph`, `DiHypergraph`, and `SimplicialComplex` need to be generalized

[nwlandry]

We should look into how we can potentially use the same functions in XGI for different classes.

[nwlandry]

An issue that I ran into is that SimplicialComplex stores simplices as frozensets, not sets.

[leotrs]

How/when did you run into that issue?

[nwlandry]

This becomes an issue when you try to inherit the remove_node function from Hypergraph in SimplicialComplex. As is, only strong node removal works in SimplicialComplex, because it remove entire edges to which the node belongs. Otherwise, the function tries to delete the node from frozensets which doesn't work.