Add Pluscodes formula and Uber H3 into appsheet

[nathaniel_fishe]

It would along side have the location also have the pluscode and or Uber H3

Use the already google add on function for pluscodes https://workspace.google.com/marketplace/app/plus_codes/604254879289

The plus code and uber H3 can work at aggregating spatial data textually

https://www.uber.com/blog/h3/