Support audit logs with additional fields (#6738)

This PR adds support

- Request query params
- Request headers
- Response headers

AuditLogEntry is exported and versioned as well
starting with this PR.

cmd/gateway-main.go

@@ -249,9 +249,6 @@ func StartGateway(ctx *cli.Context, gw Gateway) {
 		logger.FatalIf(err, "Unable to initialize disk caching")
 	}
 
-	// Load logger subsystem
-	loadLoggers()
-
 	// Re-enable logging
 	logger.Disable = false