Allow more dynamic connector configuration (e.g. though env vars)

[septatrix]

Describe the feature

Upstream issue for nitrojs/nitro#2271. For production deployments it must be possible to obtain connection information like path/(host+port), but especially username+password from dynamic sources. An example would be environment variables (insecure) or something more generic that could be used by nitro in conjunction with useRuntimeConfig

Additional information

• Would you be willing to help implement this feature?