feat: Async deleting workspaces and projects (from CLI) [DET-7821]

[mapmeld]

Description

• Removed limits of CLI on deleting workspaces and projects
• Deleting an empty project/workspace continues to work immediately (added new completed: true attribute to response)
• Deleting used projects starts an async process to delete experiments (until one fails), then deletes the project
• Deleting used workspace starts an async process to delete projects (until one fails) with the same project-deletion function, then deletes the workspace
• Workspaces and projects have a 'state' property tracking DELETING / DELETE_FAILED. This is optionally visible in the WebUI

Future work: remove limits on WebUI, add notifications, etc.

Test Plan

Currently outputs go to the log

• Create and delete a workspace without adding anything (WebUI and CLI)
• Create a workspace, add empty projects, and delete the workspace (WebUI and CLI)
• Create a workspaces, add projects, add experiments inside some of the projects (det e create sample/const.yaml sample/ --project_id 248)
• Delete a project from the CLI (det p delete WorkspaceName ProjectName) and delete workspace (det w delete WorkspaceName)
• If you have an experiment which has DELETE_FAILED status for some reason, det e move ExperimentID WorkspaceName ProjectName will make that workspace and project un-deletable.

Checklist

• [x] User-facing API changes need the "User-facing API Change" label.
• [x] Release notes should be added as a separate file under docs/release-notes/.
• [x] Licenses should be included for new code which was copied and/or modified from any external code.
• [x] If modifying /webui/react/src/shared/ verify make -C webui/react test-shared passes.

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