move is_owner? and is_owner_or_admin? to context methods

lib/memex/pipelines.ex

@@ -230,4 +230,13 @@ defmodule Memex.Pipelines do
   def change_pipeline(%Pipeline{} = pipeline, attrs \\ %{}, user) do
     pipeline |> Pipeline.update_changeset(attrs, user)
   end
+
+  @spec is_owner_or_admin?(Pipeline.t(), User.t()) :: boolean()
+  def is_owner_or_admin?(%{user_id: user_id}, %{id: user_id}), do: true
+  def is_owner_or_admin?(_context, %{role: :admin}), do: true
+  def is_owner_or_admin?(_context, _other_user), do: false
+
+  @spec is_owner?(Pipeline.t(), User.t()) :: boolean()
+  def is_owner?(%{user_id: user_id}, %{id: user_id}), do: true
+  def is_owner?(_context, _other_user), do: false
 end