Add Hirose FH26 series footprints

Hirose FH26 series FPC/FFC connector footprints (generated using own script).

They look like below (the example for 15-pin):

The series datasheet:

https://www.hirose.com/en/product/document?clcode=&productname=&series=FH26&documenttype=Catalog&lang=en&documentid=D49355_en

https://www.mouser.com/datasheet/2/185/FH26_catalog-939414.pdf

FH26 series doesn't have 19-pin connector. FH26W series doesn't have 55-pin connector.

This merge request includes both footprints. FH26W is a halogen-free version of FH26, but the same mechanical dimensions.

Footprints Genereator File: kicad-footprint-generator!885 (closed)

3D models: kicad-packages3D!889 (merged)

3D models FreeCAD parametric source file: kicad-packages3D-source!369 (merged)