Adds new example notebooks

[vsreekanti]

Describe your changes and why you are making these changes

Adds recently developed example notebooks to examples directory.

Related issue number (if any)

Loom demo (if any)

Checklist before requesting a review

• I have created a descriptive PR title. The PR title should complete the sentence "This PR...".
• I have performed a self-review of my code.
• [N/A] I have included a small demo of the changes. For the UI, this would be a screenshot or a Loom video.
• [N/A] If this is a new feature, I have added unit tests and integration tests.
• [N/A] I have run the integration tests locally and they are passing.
• [N/a] I have run the linter script locally (See python3 scripts/run_linters.py -h for usage).
• [N/A] All features on the UI continue to work correctly.
• Added one of the following CI labels:
  • run_integration_test: Runs integration tests
  • skip_integration_test: Skips integration tests (Should be used when changes are ONLY documentation/UI)

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[kenxu95]

How long do these notebooks take to run? Should we consider adding them to our GH actions?

[vsreekanti]

The RoBERTa one takes about 10 minutes. The ImageNet one's a little longer — about 15-20 iirc.