Quantum: add az quantum workspace user list command

[Konstantin Averkiev (kaverkiev)]

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Breaking Changes
⚠️ None

⚠️Azure CLI Extensions Breaking Change Test

⚠️quantum

rule	cmd_name	rule_message	suggest_message
⚠️ 1001 - CmdAdd	quantum workspace user list	cmd quantum workspace user list added

Summary

Adds az quantum workspace user list to list the users (user principals) with access to an Azure Quantum workspace. To match the Azure Quantum portal, only user principals are listed — groups and service principals are excluded. Supports --role (defaults to Quantum Workspace Data Contributor) and --include-inherited (to also include access inherited from the parent resource group/subscription).

Details

Lists Azure RBAC role assignments scoped to the workspace.
Supports --assignee, --assignee-object-id, and --role filters (reuses the existing workspace user params).
Adds an opt-in --include-inherited flag to also surface access inherited from the parent resource group and subscription (assignments granted above the workspace scope).

Testing

New unit tests: scope construction, --include-inherited pass-through, and table transformer.
Added a live user list check to the test_workspace_user scenario.
Manually verified against a live workspace (default vs --include-inherited).

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[azure-client-tools-bot-prd]

Hi Konstantin Averkiev (@kaverkiev),
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in pyproject.toml (or setup.py, if the extension has not migrated yet) as well.

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[Copilot]

Pull request overview

This PR adds a new az quantum workspace user list command to the Quantum extension to enumerate Azure RBAC role assignments relevant to an Azure Quantum workspace, with optional inclusion of inherited (parent-scope) assignments, and updates tests/help/versioning accordingly.

Changes:

• Added quantum workspace user list command wired to a new list_users operation and a transform_users table transformer.
• Introduced --include-inherited support and updated help text for the new command.
• Added unit tests + a live scenario check; bumped extension version and updated HISTORY.rst.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/quantum/setup.py	Bumps extension version to 1.0.0b21.
src/quantum/HISTORY.rst	Adds release notes entry for the new workspace user list command.
src/quantum/azext_quantum/tests/latest/test_quantum_workspace.py	Adds unit tests for scope/flags/transformer and a live scenario assertion for listing users.
src/quantum/azext_quantum/operations/workspace.py	Implements list_users() using role assignment listing + filtering.
src/quantum/azext_quantum/commands.py	Adds transform_users and registers az quantum workspace user list.
src/quantum/azext_quantum/_params.py	Adds --include-inherited argument; updates --role help to cover list behavior.
src/quantum/azext_quantum/_help.py	Adds help + examples for quantum workspace user list.

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