add invite model

priv/repo/migrations/20210904211727_create_invites.exs

@@ -0,0 +1,18 @@
+defmodule Cannery.Repo.Migrations.CreateInvites do
+  use Ecto.Migration
+
+  def change do
+    create table(:invites, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+      add :name, :string
+      add :token, :string
+      add :uses_left, :integer, default: nil
+      add :disabled_at, :naive_datetime, default: nil
+      add :user_id, references(:users, on_delete: :nothing, type: :binary_id)
+
+      timestamps()
+    end
+
+    create index(:invites, [:user_id])
+  end
+end