add push button XKB TS-1187A
Add the XKB TS-1187A SMD push button.
JLCPCB currently stocks this as the only SMD push switch among its "basic parts", so it's pretty likely to be used by those who want to use JLCPCB for fabrication.
Datasheet: http://www.helloxkb.com/public/images/pdf/TS-1187A-X-X-X.pdf
Image: