[FEATURE] Permit to use generic and parse data

## Example usage
```typescript
// If applicable, provide an example of how you would like to use this feature
import { yaml } from "ts-tmpl-engine";

const example = yaml`
apiVersion: kubeadm.k8s.io/v1beta4
[...]
`.parse<{ apiVersion: string }>();
```
* [ ] @tmpl/core
* [ ] @tmpl/gen
* [ ] vscode-extension