add timestamp support
PTAL @pzelasko  @pzelasko Can you approve again? Rebased the repo for the tests. @titu1994 @stevehuang52 Could you take a look to trigger the workflow checks? <!-- pylint-output-strict-mode-false -->

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

---

Your code was analyzed with PyLint. The following annotations have been identified:

```
************* Module nemo.collections.common.tokenizers.canary_tokenizer
nemo/collections/common/tokenizers/canary_tokenizer.py:133:0: C0301: Line too long (120/119) (line-too-long)
nemo/collections/common/tokenizers/canary_tokenizer.py:56:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/common/tokenizers/canary_tokenizer.py:60:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/common/tokenizers/canary_tokenizer.py:64:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/common/tokenizers/canary_tokenizer.py:68:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/common/tokenizers/canary_tokenizer.py:158:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/common/tokenizers/canary_tokenizer.py:164:4: C0116: Missing function or method docstring (missing-function-docstring)

-----------------------------------
Your code has been rated at 9.42/10
```

---

Mitigation guide:

* Add sensible and useful docstrings to functions and methods
* For trivial methods like getter/setters, consider adding `# pylint: disable=C0116` inside the function itself
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By applying these rules, we reduce the occurance of this message in future.

Thank you for improving NeMo's documentation!
# What does this PR do ?

Add support for parsing timestamp data for training.

**Collection**: [Note which collection this PR will affect]

# Changelog 
- Filter out transcription with text by regex
- Tokenize word by word and insert start and end timestamps for each word


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- [ ] Bugfix
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# Additional Information
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