Powershell import-csv into hash table

https://kimconnect.com/powershell-convert-csv-into-hashtable/

https://community.idera.com/database-tools/powershell/ask_the_experts/f/learn_powershell_from_don_jones-24/13041/hashtable-export-csv-format-output
http://techtalklive.org/ttlblog/powershell-exporting-hash-value-to-csv-file/

https://www.red-gate.com/simple-talk/wp-content/uploads/imported/1989-PSOL3Big.html

https://ss64.com/ps/syntax-hash-tables.html

https://www.debugcn.com/en/article/29925302.html

https://4sysops.com/archives/convert-json-to-a-powershell-hash-table/