Changes to the per-workspace PVC do not trigger reconciles

[amisevsk]

Description

The DevWorkspace Operator does not watch PVCs for events, and so does not trigger reconciles if the PVC used by per-workspace DevWorkspaces is modified/deleted.

How To Reproduce

1. Start a per-workspace DevWorkspace: oc apply -f samples/theia-next_per-workspaceStorage.yaml
2. Wait for workspace to reach running state
3. Edit the storage-<workspaceID> PVC by adding e.g. an annotation -- note no reconcile is triggered
4. Delete the storage-<workspaceID> PVC and note that the DevWorkspace stays in the running state (it should fail to allow the PVC to be cleaned up)

Expected behavior

• DWO should queue reconciles for the owner DevWorkspace when the PVC is modified
• DWO should fail the per-workspace DevWorkspace if the PVC is deleted. This is pretty important as otherwise the running pod of the workspace will prevent the PVC from being cleaned up.

Additional context