Update: Support group accounts

[erichulburd]

Description

We want to support the client's ability to execute against a Rigetti QCS QPU using a QCS group account. To this end, we upgrade qcs-api-client which will add X-QCS-ACCOUNT-{ID/TYPE} headers to outgoing requests when the profile has account_{id/type} set.

Supersedes #1438

Checklist

• The PR targets the rc branch (not master).
• The above description motivates these changes.
• There is a unit test that covers these changes.
• All new and existing tests pass locally and on the PR's checks.
• Parameters and return values have type hints with PEP 484 syntax.
• Functions and classes have useful Sphinx-style docstrings.
• All code follows Black style and obeys flake8 conventions.
• (New Feature) The docs have been updated accordingly.
• (Bugfix) The associated issue is referenced above using auto-close keywords.
• The changelog is updated, including author and PR number (@username, Test ignore #1234).

[dbanty]

Great! So users are expected to configure this in their settings.toml somehow? Should we add something to the docs stating how to do that? And/or add a helper function to the config class that makes patching it (like you did in the test) easier?

Also, the description of this PR is out of date I think, still mentions get_qc

[erichulburd]

@dbanty Good question about the docs. I'm inclined to say that client configuration documentation shouldn't leak into pyQuil. That said, we could probably be more explicit about configuration in the qcs-api-client documentation: https://qcs-api-client-python.readthedocs.io/en/latest/autoapi/qcs_api_client/index.html

There will be explicit documentation about configuring group accounts at https://docs.rigetti.com/qcs/. It will require something along the lines of:

qcs tools add-group-profile my-group-profile my-group

[dbanty]

Maybe just a link from where config is mentioned in pyquil to the relevant API docs?

Although, I'm thinking now we should document all config-related things on the main docs website and link to there from everywhere else since the C and Rust SDKs also use the same file formats.

[erichulburd]

We can probably add a bit more detail to this section in the docs, but probably the best entry point to configuration documentation that can link out to other documentation and sources.

https://docs.rigetti.com/qcs/guides/using-the-qcs-cli#configuring-credentials

[dbanty]

LGTM