Expose APIs as an installed package

[BenWinchester]

Issue

CLOVER contains a series of functions which may be useful for users who have installed the clover-energy package. Currently, the __all__ lists are not correctly exposing these APIs.

Proposal

Correctly implement the exposing of these functions as APIs for the end users.

The only alternative is not exposing these APIs and leaving the code as is with four installed access points.