add generator for VSON-8-1EP_3x3mm_P0.65mm_EP1.65x2.4mm

following kicad-footprints!3171 (merged) & kicad-symbols!3896 (merged)

(ping @cnieves1, again ahah)

Here are the dimension:

I don't really understand how the comments are added in the file, I tried to reproduce what I saw. Feel free to criticize.