Add containers docs

[samanthavbarron]

Summary

This PR builds the documentation for the containers defined in qiskit.primitives.containers.

Closes: Qiskit/documentation#2475

Details and comments

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[ihincks]

Can you remind me if there's an easy way to see a render preview?

[coveralls]

Pull Request Test Coverage Report for Build 12357286611

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 10 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.008%) to 88.953%

---

Files with Coverage Reduction	New Missed Lines	%
crates/accelerate/src/unitary_synthesis.rs	1	92.2%
crates/qasm2/src/expr.rs	1	94.02%
crates/qasm2/src/lex.rs	8	91.98%

Totals
Change from base Build 12356117829:	-0.008%
Covered Lines:	79419
Relevant Lines:	89282

---

💛 - Coveralls

[samanthavbarron]

Can you remind me if there's an easy way to see a render preview?

I'm not sure, I'll poke around and see if GH Actions stores it somewhere. If so I'll post a screenshot

[Cryoris]

@samanthavbarron the docs are available as build artifact in the lint + docs stage, but it seems they currently fail to build. You can also build them locally via tox -e docs (maybe with a prior tox -e docs-clean 🙂).

[gadial]

This will fail because the indentation level for Bitarray etc. is not the same as for :toctree:. Shpinx is very strict regarding the "same-indentation" policy for anything below a .. block.

You can check it worked locally using tox -edocs.