Adds a `-type` flag to the `volume init` command that generates an example
volume specification with only those fields relevant to dynamic host
volumes. This changeset also moves the string literals into uses of `go:embed`
Ref: https://github.com/hashicorp/nomad/pull/24479
* Convert assets from bindatafs to go embeds
* Add command/asset to "uninteresting" list for missing test check
* Remove generate-examples target
* Update paths in tests
