[ASR][Tools] RIR corpus generator
# What does this PR do ?

This PR aims to add a tool for generating a set of multi-channel RIRs.

**Collection**: ASR

# Changelog 
- Added `RoomCorpusGenerator` in `asr/data/data_simulation.py`
- Added unit tests in `tests/collections/asr/test_asr_data_simulation.py`
- Added an example config and a readme file in `tools/rir_corpus_generator`

# Usage
The tool can be used as

```bash
python rir_corpus_generator.py output_dir=OUTPUT_DIR
```

where `OUTPUT_DIR` is a path to the output directory. This will use the default configuration in `conf/rir_corpus_v1.yaml`.

The output will be structured as

```bash
OUTPUT_DIR
+--{train, dev, test}
|	+--*.h5
+--config.yaml
+--{train, dev, test}_manifest.yaml
+--{train, dev, test}_info.png
```

Each directoy, e.g, `{train, dev, test}`, corresponds to a subset of data and contain the `*.h5` files with RIRs. Corresponding `*_manifest.yaml` files contain metadata for each subset.

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