Add Hirose DF3EA VERTICAL

The footprint library already contains the Hirose DF3EA horizontal connector series. This PR adds vertical support, via the footprint generator.

Footprint generator merge request:

kicad-footprint-generator!717

Drawing:

https://www.hirose.com/en/product/document?clcode=CL0543-0315-0-21&productname=DF3EA-2P-2V(21)&series=DF3&documenttype=2DDrawing&lang=en&documentid=0001162002

Questions / Issues: I've noticed that the latest generator output does not match what is in the kicad footprint library. Changes include:

• The kicad footprint repo calls the existing footprint Hirose_DF3EA-11P-2H_1x11-1MP_P2.00mm_Horizontal (and similar) elements "connector Hirose top entry", but the generator produces the same footprints with the name "connector Hirose horizontal".
• The footprint repo uses %R where the generator uses ${REFERENCE} in the line (fp_text user %R (at 0 1.9) (layer F.Fab)

I'd be happy to get that fixed for my new footprints and for the existing hirose footprints in the same generator yml, but I don't know what is the preferred version for the two changes mentioned above.