L80 GPS Mount and Optimizer

A simple mount for the inexpensive L80 module from Quectel. This GPS module is based on the mediatek MTK location engine. Find more details here: https://www.quectel.com/UploadImage/Downlad/L80_Hardware_Design_V1.1.pdf

The mount makes sure all the rules for the mounting as mentioned in the datasheet are followed.

This also adds a CR2032 button cell to keep the SRAM and RTC alive. At 7uA that should last quite a long time.

I use a copper tape at the bottom of the mount to form the groun