fix: use :name option for DynamicSupervisor.start_link calls

[seungjinstord]

Checklist

• Code conforms to the Elixir Styleguide

Problem

We have had incidents where consumer lag spikes, and this is to implement a recommendation from comment:

derekkraan/horde#256

Details

Add the option on the start_link as indicated by the comment in the github issue in Horde's repo.

[seungjinstord]

Actually have to change it in wms-service as I misread the implementation in the github repo's issue.
I have to tweak the instantiation of Horde.DynamicSupervisor (start_link) - I was tweaking start_child