SE-2946: Create sample notebook to demonstrate TxnConfig side can be set up to change instrument units

[Yemmy-At-Finbourne]

Pull Request Checklist

• [x] Changes follow the style guide
• [x] Tests pass
• [x] Raised the PR against the develop branch

Description of the PR

Describe the code changes for the reviewers, explain the solution you have provided and how it fixes the issue

[review-notebook-app[bot]]

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[armlowe]

/LGTM