Connector Phoenix: Create SPT series

Create Phoenix Contact SPT Terminal Blocks. Several THT series added.

Footprint PR: https://github.com/KiCad/kicad-footprints/pull/2479 Footprint generator PR: https://github.com/pointhi/kicad-footprint-generator/pull/635 Packages 3D PR: https://github.com/KiCad/kicad-packages3D/pull/732 Packages 3D generator PR: https://github.com/easyw/kicad-3d-models-in-freecad/pull/398

Datasheet: one datasheet for each part is provided by Phoenix and all can be found on https://www.phoenixcontact.com/, just type "SPT" in the search bar to found the parts. It is also possible to search each part individually with the part number.

Picture of Horizontal + Vertical examples from Phoenix:

Footprint screenshots of the same examples:

3D preview of the same examples: