v12: Migrate ExtData YAMLs from GOCART and ACHEM#11

mathomp4 wants to merge 1 commit into

release/v1.0GEOS-ESM/ACHEM:release/v1.0from

feature/v12-move-extdata-yamlGEOS-ESM/ACHEM:feature/v12-move-extdata-yamlCopy head branch name to clipboard