Promote features for new L2G feature matrix

[project-defiant]

As a user I want document and refactor list of features included in the new feature matrix because I want to document them properly and test the feature template interface.

Background

Refactoring of the feature matrix https://github.com/opentargets/issues/issues/3252 allows genetics team to revisit the implementation of existing L2G features described in https://github.com/opentargets/issues/issues/3458

Tasks

This task is the continuation of #3458 to develop new and reimplement old features with new feature matrix template.

• [ ] New features are implemented
• [ ] Old features are reimplemented

Acceptance tests

• [ ] All L2G features follow the template
• [ ] All L2G features have it's own documentation and explanation

[ireneisdoomed]

Because each feature has its own class now, they are documented at the code level so further documentation could go here. For example:

class EqtlColocClppMaximumFeature(L2GFeature):
    """Max CLPP for each (study, locus, gene) aggregating over all eQTLs."""

    feature_dependency_type = Colocalisation
    feature_name = "eQtlColocClppMaximum"

    @classmethod
    def compute(
    ...