GPM IMERG kerchunk recipe

[abarciauskas-bgse]

Draft until we can:

• [ ] test S3 urls are working (local testing was with HTTPS)
• [ ] test it is working on flink
• [ ] decide if we want to wait for https://github.com/pangeo-forge/pangeo-forge-recipes/pull/556 to be merged
• [ ] add dependency on main branch of pangeo-forge-recipes for WriteCombinedReference
• [ ] Determine if we want to keep the nv dimension

The nv dimension is a dimension without coordinates (no labels) and exists only for the time_bnds variable to contain the first and last date for the dataset.

[ranchodeluxe]

pre-commit.ci autofix