Add FCI SFV-xxR FPC connector script

Add script to generate footprints for the Amphenol-FCI SFV connectors series: https://cdn.amphenol-icc.com/media/wysiwyg/files/drawing/sfv12b_hlf.pdf

This is based upon the script "conn_ffc_te_84952-84953.py" and only slightly modified

• Numerical values of pin and tab and body position + size
• Removed some Silkscreen
• Pin1 marker is smaller
• Two variants
  • -1ST: Bottom contacts
  • -2ST: Top contacts
• I could not find the Pick'n'Place origin/offset in the datasheet, so I just put in 2mm which seems fine when looking at the connector. I would like to change that if someone spots the correct value.

Here is an example of the 10Pin part which I will be using for my board.

Currently this script build the -1ST and -2ST variant, but they are physically identical. There is also a -3ST and -4ST variant (Datasheet) that also seem to have the same footprint. The script could also generate them, but that seems excessive. Even the two variants are the same, the description is different.