Langid update
# What does this PR do ?

Updates `label_models` with new ngc model (PearlNet). For ICASSP.

**Collection**: [Note which collection this PR will affect]
ASR
# Changelog 
- Added new ngc model to `label_models.list_available_models`

# Usage
* You can potentially add a usage example below

```python
# Add a code snippet demonstrating how to use this 
```

# Before your PR is "Ready for review"
**Pre checks**:
- [Y ] Make sure you read and followed [Contributor guidelines](https://github.com/NVIDIA/NeMo/blob/main/CONTRIBUTING.md)
- [N] Did you write any new necessary tests?
- [Y] Did you add or update any necessary documentation?
- [N] Does the PR affect components that are optional to install? (Ex: Numba, Pynini, Apex etc)
  - [Y] Reviewer: Does the PR have correct import guards for all optional libraries?
  
**PR Type**:
- [Y] New Feature
- [N] Bugfix
- [N] Documentation

If you haven't finished some of the above items you can still open "Draft" PR.


## Who can review?

Anyone in the community is free to review the PR once the checks have passed. 
[Contributor guidelines](https://github.com/NVIDIA/NeMo/blob/main/CONTRIBUTING.md) contains specific people who can review PRs to various areas.

# Additional Information
* Related to # (issue)
