dont use S3 directly allow to use any document url (document service agnostic)

lib/provider_service/queries/provider_queries.ex

@@ -1,9 +1,11 @@
 defmodule ProviderService.Queries.ProviderQueries do
+  import Ecto.Query
   alias ProviderService.Projections.Provider
   alias ProviderService.Repo
 
   def list_providers(params \\ %{}) do
-    Flop.validate_and_run(Provider, params, for: Provider)
+    base = from(p in Provider)
+    Flop.validate_and_run(base, params, for: Provider)
   end
 
   def get_provider(provider_id) do