https://projects.invisionapp.com/d/main/default/#/console/12114617/283001695/preview
from the card/right panel, see an action/icon to add a deliverable item.
click on icon, see the popup pattern we've used (background docs) to upload/browse a file.
Required to add the title of the deliverable item (which is by default the name of the object uploaded)
State of the deliverable corresponds to the folder the item is in.
AC:
- a user can upload a binary to a deliverable item by using the upload action
- the name of the binary is extracted from the filename
- a user can only upload one file per deliverable item
- there is no validation on the uploaded file
- for now the DeliverableItem extends File and this blob is added directly to the DeliverableItem/ is not an independent source ( Asset)