Add serverless guide with function template example: hamiltonian simu…

[frankharkins]

Continuation of #2276

[qiskit-bot]

One or more of the following people are relevant to this code:

• @jenglick
• @pandasa123

[review-notebook-app[bot]]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[garrison]

This will close #2242 when it is merged.

[garrison]

I opened #2302 since I don't have permission to push to this repository.

[abbycross]

I recommend we rename the file something more human-readable, like /serverless-function-template