Add complete SST suite to source_id entries

[durack1]

Add to source_ids.py and institution_ids.py

COBE, COBE2 (to be downloaded)
NOAA-ERSST-5 (to be downloaded)
HadSST4, HadISST1-1, HadISST2-2, HadISST2-3 (downloaded)
NOAA-OISST-2-0, NOAA-OISST-2-1 (to be downloaded)
RSS-MW-5-1, RSS-MW-IR-5-1 (to be downloaded)

CMC-0-2, CMC-0-1 (to be downloaded)

@gleckler1 already downloaded https://podaac.jpl.nasa.gov/dataset/MUR25-JPL-L4-GLOB-v04.2

[durack1]

@gleckler1 I now have some templates that download all the above. Did you want to take a peek at #266 and see what you think, and if you're happy with changes merge this so I can start dropping new entries into the revised tree