Is your feature request related to a problem? Please describe.
I would like to be able to have a kv store setup section which will use the contents of files for the kv store entries.

Describe the solution you'd like
I'd like the solution to match the solution for local kv stores

    [[local_server.kv_stores.example_store]]
      key = "second"
      file = "../test/data/some-object.txt"

Describe alternatives you've considered
I haven't considered an alternative