Added technical sequence diagram to example docs

[riaanduplessis]

📑 Summary

As explained in the issue, I believe some examples orientated more to software might be good to give a better understanding of how to use the diagrams in real-world scenarios.

I will be contributing some more as I get time.

Resolves #2795

📏 Design Decisions

In issue #2795, I stated additions to the sequence diagrams page on the docs, I opted to instead simply add to the examples page as this makes more sense for more advanced use-cases while keeping the diagram specific docs orientated towards documenting the features of that diagram type.

📋 Tasks

Make sure you

• 📖 have read the contribution guidelines
• 💻 have added unit/e2e tests (if appropriate)
• 🔖 targeted develop branch

[ashishjain0512]

Thanks for the contribution.