[MS] Workspace offline details modal

[fabienSvtr]

Missing backend information:

• Download state (downloaded, in progress, available, error)
• Progress information
• Date of joining the workspace

Should be changed:

utils.ts: openWorkspaceDetailsModal function
WorkspaceDetailsModal.ts: Managed error cases
types.ts: Check if you have the download state here and the joining date + make sure we have an enum for the downloading state here.

interface WorkspaceInfo extends ParsecWorkspaceInfo {
  sharing: Array<[UserTuple, WorkspaceRole | null]>;
  size: number;
  lastUpdated: DateTime;
  created?: DateTime;
  joinedOn?: DateTime;
  availableOffline: boolean;
  handle: WorkspaceHandle;
  downloadState: WorkspaceDownloadState;
  mountpoints: [MountpointHandle, SystemPath][];
}

enum WorkspaceDownloadState {
  NotAvailable,
  InProgress,
  Available,
}