Connect Gorm logger to logrus

[sa7mon]

If we provide the -db flag without postgres running, we get this output

╰─$ go run main.go -json -bucket asdfasdf567 -enumerate -provider custom -db                                                                                

[error] failed to initialize database, got error failed to connect to `host=db_dev user=postgres database=postgres`: hostname resolving error (lookup db_dev: no such host)

{"level":"error","msg":"failed to connect to `host=db_dev user=postgres database=postgres`: hostname resolving error (lookup db_dev: no such host)"}
exit status 1

In database.go:Connect(), configure Gorm to hook into our existing Logrus logger so:

• we only log errors once
• we log errors in either JSON or human-readable format depending on -json flag

https://www.soberkoder.com/go-gorm-logging/