Go tools fails to identify codegen-framework as a tool dependency

### tfplugingen-framework CLI version

`tfplugingen-framework module: v0.3.1`

### Provider Code Spec File

```JSON
NA
```

### Expected Behavior

No error when using this as tools dependency.

### Actual Behavior


`import "github.com/hashicorp/terraform-plugin-codegen-framework/cmd/tfplugingen-framework" is a program, not an importable package`

### Additional Information

Despite having same project layout, `"github.com/hashicorp/terraform-plugin-docs/cmd/tfplugindocs"` works as a [tools dependency](https://github.com/go-modules-by-example/tools).

Is there a new way to add tools dependency? Where is it documented?

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct