In this repo a design library is shared for common designs in KiCAD. It concludes the symbol, footprint and 3D models.
For using the 3D models, you have to add the path to the KiCAD variable ${KICAD8_OWNLIB_DIR} under Settings -> Path configuration. Add their the name KICAD8_OWNLIB_DIR
with the path ${LOCAL_PATH_TO_GIT}/kicad-library/library
.