a combination footprint to support three types of antenna: IPEX-dat, SMA-dat, single-pole antenna.
- IPEX-dat == for limited physical size to fit in
- SMA-dat == robust connection
- single-pole antenna == single cheap solution
The default populated antenna socket by us will be IPEX

Versions
V2
- support pin-hole solder-in antenna-spring-dat
- further optimized layout
V1
- support - CONN-SMA-dat - CONN-ipex-dat