Feature: Vector "label" legend entries

QGIS now supports adding legend entries for layer labels, which will display the font style and labeling classes for vector features.
This provides a legend entry that allows users to explicitly identify features by label style, even when no feature symbology is used.
Control of this behavior is made accessible by adding a "show label legend" option to the legend tab of the vector layer properties.

This feature was funded by Canton of Glarus

This feature was developed by mhugent