Added JAE LY Angled connectors

[SchrodingersGat]

This PR adds the complete series of LY angled connectors

Datasheet
http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ038187.pdf

[pointhi]

Please check Dimension B. If you are interested about a real top view, you also have to consider Dimesion C.

the rest looks fine

[SchrodingersGat]

Can you provide a bit more info as to what you mean here? :) Happy to adjust but not quite sure where the issue is...

[evanshultz]

@pointhi Can you share more about what you found so we can complete this PR? Thanks!

[SchrodingersGat]

KLC issues have been addressed

[evanshultz]

@pointhi @poeschlr @jkriege2 Is someone able to review this?

[poeschlr]

Am i right in assuming these footprints are script generated? (Makes checking easier.)

The pin order might not be the best choice for the symbols we currently have. (odd/even would be better such that we can use the current symbols.)
In the datasheet pin names are given similar to BGA pin numbers but with letter and number exchanged (1A, 2A, .... nA; 1B, 2B, ..., nB) See issue for a discussion if we should create such symbols KiCad/kicad-library#1451

Pin 1 marker on fab layer is missing.

I assume @pointhi meant the following with his mention of dimension b and c (I don't think this is important/ we can merge without changes to it.):

[evanshultz]

@SchrodingersGat Can you review Rene's comments above, please?