Support scram-sha-256 for communication with postgresql for vizlib-server

Currently only md5 works, changing to scram-sha-256 will give the following error:

{"level":"warn","message":"[CoreModule][initialize] warning, error occurred while trying to setup server url tag for the VizlibWritebackTable extension, details: Error: Invalid IV length","timestamp":"2022-05-12 10:39:48.238"}
{"level":"warn","message":"[CoreModule][initialize] warning, error occurred while trying to setup server url tag for the VizlibInputForm extension, details: Error: Invalid IV length","timestamp":"2022-05-12 10:39:48.238"}

md5 is easily cracked these days and communicating to a remote postgresql should be protected.