Make AppRunner infrastructure more transparent

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**Tell us about your request**

Make AppRunner infrastructure more transparent.

I tried to create a internet accessing apprunner service connected to the default vpc via a vpc-connector.
Access is blocked.
I GUESS because the tasks are running inside private networks and need a NAT gateway. But...

- I do not know in which subnets (invisible)
- I do not know in which ecs cluster (invisible)
- I cannot use network reachability analyzer because apprunner is invisible here
- I am lost :)

**Describe alternatives you've considered**

Make these infrastructure things visible to allow troubleshooting.