Display the number of paragraphs in a fieldset and auto-increment for Service Locations

[kevwalsh]

As an editor of a content type with multiple value paragraph entity references, i want an indicator of how many of those paragraphs i have, which will provide an affordance for potentially adding more, or dragging them around

ACs

• For each service location on node/1040/edit, we increment update the label for the paragraph entity in the form to include the number of service locations on the form

[kevwalsh]

Closing this. #4439 for a broader look at health service editorial experience.