Returns a modified copy of the given DevWorkspace's Template Spec which contains an additional Devfile volume 'persistentHome' that is mounted to `/home/user/` for every container component defined in the DevWorkspace.

Returns true if the following criteria is met: - `persistUserHome` is enabled in the DevWorkspaceOperatorConfig - The storage strategy used by the DevWorkspace supports home persistence - None of the container components in the DevWorkspace mount a volume to `/home/user/`.