Expose resource names for all Terraform resources in the API and UI

With the advent of prebuilds, often our persistent resource names are stuff like `coder-prebuilds-prebuild-xyz`. For example in dogfood, all prebuilt workspace volumes will be permanently named `coder-prebuilds-prebuild-xyz` and the labels will permanently refer to the prebuilds user and the prebuilds workspace name.

This makes it difficult to find resources for a specific workspace when you need to actually go digging on the provider side for debugging or cleanup. I propose we expose all resource names (even ones not tracked as `resources` in Coder) as read from the terraform graph on the workspaces page somewhere.

I should be able to see `docker_volume: coder-prebuilds-prebuild-xyz` on every workspace, and easily fetch that from the API without having to download the tfstate file and parse it out myself.