Rust port of [terraform-config-inspect](https://github.com/hashicorp/terraform-config-inspect).
# Implemented features
- [x] `path`
- [x] `required_core`
- [x] `required_providers`
- [ ] `variables`
- [ ] `outputs`
- [ ] `provider_configs`
- [ ] `managed_resources`
- [ ] `data_resources`
- [ ] `module_calls`
- [ ] `diagnostics`