add basic cirq and qualtran tutorial

[qqUAnH]

I've added tutorials for Cirq and Qualtran. These tutorials were developed for the course "Practical Quantum Computing" by me and Professor Alexandru Paler, and they've received positive feedback from our students.

[google-cla[bot]]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[mpharrigan]

Thanks for sharing your tutorial notebook! It looks like a nice way of tying together a lot of the documentation floating around and is made interactive with the exercise portions.

In its current form, I don't think it's completely appropriate for wholesale inclusion in the qualtran docs. Here are some major organizational changes if you'd like to contribute this to the main qualtran docs

• the Cirq tutorial is out of the scope for this project
• For the parts based on existing documentation: I'd like to keep this as in-sync as possible. So if you made any changes or pedagogical improvements -- please contribute them "upstream" to the original documentation notebooks (hosted in this repository).
• Then: it is important to link from this all-in-one tutorial back to the topic-based documentation on which it is based. Basically, we need this tutorial to fit into a cohesive doc suite

---

If you're happy with the tutorial as written, an alternative would be for you to host it yourself and we can link out to it from the docs

[qqUAnH]

Hi @mpharrigan, I have removed Cirq from the all-in-one tutorial and updated it with references and a proper introduction. I also made some small modification in the original Bloq-tutorial and Cirq Interoperability notebook to keep everything in-sync