feat: get climate data from GoogleEarthEngine

[mrustl]

GoogleEarthEngine: GSMaP Operational (1h rainfall 2000 - current)

https://developers.google.com/earth-engine/datasets/catalog/JAXA_GPM_L3_GSMaP_v6_operational
https://developers.google.com/earth-engine/datasets/catalog/JAXA_GPM_L3_GSMaP_v6_reanalysis

https://r-earthengine.github.io/