Rename IBM Direct Access API

[ohtanim]

Description of Change

The IBM Direct Access API has been renamed to the IBM Quantum System API.
This PR addresses this API name change only and does not include any functional changes.

Important

The IBM Direct Access API has been renamed to the IBM Quantum System API.
As part of this change, the previously available resource type name has been updated from direct-access to ibm-quantum-system.
During a transition period, both direct-access and ibm-quantum-system resource type names will be supported.
After the transition period ends, support for the direct-access resource type name will be discontinued.

renamed items	current name	new name
QRMI resource type name	direct-access	ibm-quantum-system
Environment variable prefix	QRMI_IBM_DA_xxx	QRMI_IBM_QS_xxx

Checklist ✅

• Have you included a description of this change?
• Have you updated the relevant documentation to reflect this change?
• Have you made sure CI is passing before requesting a review?

Ticket

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[yoonho]

To further "shield" users during the transition period, should we accept the old qrmi_slurm.json env vars, ie, QRMI_IBM_DA_? I did not see this support in src/ibm/quantum_system.rs.
Is it correct to have https://github.com/Qiskit/quantum-system-client as the repository in the Cargo.toml files? This is not a public repository as far as I know.

[ohtanim]

To further "shield" users during the transition period, should we accept the old qrmi_slurm.json env vars, ie, QRMI_IBM_DA_? I did not see this support in src/ibm/quantum_system.rs.

you can find src/ibm/direct_access.rs for old settings.

Is it correct to have https://github.com/Qiskit/quantum-system-client as the repository in the Cargo.toml files? This is not a public repository as far as I know.

Please keep this as it is. Almost all of the source code are come from that repository.

[yoonho]

Ah, I scrolled over the src/ibm/direct_access.rs diff! Sure, we can keep the repository in Cargo.toml.

[yoonho]

Approved for merging

[ohtanim]

@awennersteen @OkuyanBoga You were asked to review this PR based on the current CODEOWNERS file. As I described in our slack channel, this PR addresses the API name changes for IBM Direct Access API. I don’t think this will affect other components, but just in case, could you take a quick look if you have time?

I'm going to merge my tomorrow morning.

Thanks,

[awennersteen]

As far as I can see nothing that should impact us