Filter out all types

**Is your feature request related to a problem? Please describe.**
I don't want to see types in the variable preview, as they are not variables.

For example, `from typing import Callable` causes a type to appear in the right.

**Describe the solution you'd like**
No types to appear

**Describe alternatives you've considered**
Adding types to `arepl.defaultfiltertypes`. The problem is there's so many types to add.

**Ideal Solution**
A mechanism that blocks all types that inherit from type X.

Please +1 the issue if you would also prefer types not to appear, or -1 if you like the types.