Use custom http.Server#ErrorLog implementation

[bluekeyes]

I realized today that http.Server instances have an ErrorLog property that they use to log internal errors with connections. We should consider replacing this with a Zerolog wrapper so that the logs all have a standard format. Unfortunately, log.Logger is not an interface, so we'll have to do the translation based on the literal text written to an io.Writer.

[hermanbanken]

It is sad that no interface is used for the logger. Now we can not use various solutions like zap.

[asvoboda]

I wonder if we want to consider something like https://github.com/go-logr/logr or https://pkg.go.dev/golang.org/x/exp/slog, with zerolog implementations?

[jamestoyer]

I would +1 go-logr/logr if we decided to bite the bullet here. It's probably worth keeping in mind that golang is also trying to introduce structured logging into the language by default golang/go#56345