Add qLogNParEGO to ACQUISITION_FUNCTION_REGISTRY (#2749)

Summary:
Pull Request resolved: #2749

ParEGO AxSweeps currently fail due to the following error:

```
ValueError: Class `qLogNParEGO` not in Type[AcquisitionFunction] registry, please add it. BoTorch object registries are located in `ax/storage/botorch_modular_registry.py`. Please see our storage tutorial (https://ax.dev/docs/storage.html) for more details ('Customizing' section will be relevant for saving Ax object subclasses).
```

This rectifies by following the error's recommendation.

Reviewed By: saitcakmak

Differential Revision: D62280737

fbshipit-source-id: d3b87b5f6122db894c3d03fb2a0c0a4417f07f55

ax/storage/botorch_modular_registry.py

@@ -47,6 +47,7 @@
     qExpectedHypervolumeImprovement,
     qNoisyExpectedHypervolumeImprovement,
 )
+from botorch.acquisition.multi_objective.parego import qLogNParEGO
 from botorch.acquisition.preference import AnalyticExpectedUtilityOfBestOption
 from botorch.models import SaasFullyBayesianSingleTaskGP
 from botorch.models.contextual import LCEAGP
@@ -144,6 +145,7 @@
     qLogNoisyExpectedImprovement: "qLogNoisyExpectedImprovement",
     qLogExpectedHypervolumeImprovement: "qLogExpectedHypervolumeImprovement",
     qLogNoisyExpectedHypervolumeImprovement: "qLogNoisyExpectedHypervolumeImprovement",
+    qLogNParEGO: "qLogNParEGO",
 }