List declarations under a public module if applicable

[lars-reimann]

Is your feature request related to a problem? Please describe

Currently, we only store the module in the API data that contains a given declaration. However, other modules (particularly the __init__.py files) might import and, thus, also re-export a declaration. This behavior is already checked to determine whether a declaration is public or not. But in the editor, the declarations are still listed in the internal modules that declare them rather than the public ones that should be used instead. Implementation details like this should be hidden.

Desired solution

Store all modules that provide access to a given declaration when the api command is run. In the editor list a declaration under one of the public modules if it exists. Otherwise, pick one of the private ones.

Screenshots (optional)

Here we see, for example, the public class SVR listed underneath the private module sklearn._svm.classes. The module is private since one of the segments of its name (_svm) starts with an underscore. However, the class SVR is also available under sklearn.svm. This is the module that should appear in the tree view as its parent.

Additional Context

Maybe store an additional property "reexported_by" in the API data that stores a list of the names of modules that reexport a declaration.