Added XKB U231-091N-4BLRA00-S USB A 3.0 connector

Hello,

I've just created the footprint for the XKB U231-091N-4BLRA00-S USB 3.0 type-A connector.

• Datasheet: https://datasheet.lcsc.com/lcsc/2110100130_XKB-Connectivity-U231-091N-4BLRA00-S_C2880618.pdf