add basic user entity to dummy app

spec/dummy/app/models/user.rb

@@ -0,0 +1,5 @@
+class User < ApplicationRecord
+  include Federails::Entity
+
+  acts_as_federails_actor username_field: :id, name_field: :id
+end

spec/dummy/db/migrate/20241126151046_create_users.rb

@@ -0,0 +1,7 @@
+class CreateUsers < ActiveRecord::Migration[8.0]
+  def change
+    create_table :users do |t|
+      t.timestamps
+    end
+  end
+end

spec/dummy/spec/factories/users.rb

@@ -0,0 +1,4 @@
+FactoryBot.define do
+  factory :user do
+  end
+end

spec/requests/reports_spec.rb

@@ -1,5 +1,5 @@
 RSpec.describe "Reports" do
-  let(:actor) { create :actor }
+  let(:user) { create :user }
   let(:report_body) {
     <<-EOF
       {
@@ -17,6 +17,6 @@
 
   it "should call registered Report handler when a flag is received by Federails" do
     expect(Federails::Moderation::Report).to receive(:handle_flag).once.and_call_original
-    post actor.inbox_url, params: report_body, headers: { content_type: "application/activity" }
+    post user.actor.inbox_url, params: report_body, headers: { content_type: "application/activity" }
   end
 end