Chore: Apple site association file for deep linking (#805)

spec/controllers/apple_app_spec.rb

@@ -0,0 +1,10 @@
+require 'rails_helper'
+
+describe '/apple-app-site-association', type: :request do
+  describe 'GET /apple-app-site-association' do
+    it 'renders the apple-app-site-association file' do
+      get '/apple-app-site-association'
+      expect(response).to have_http_status(:success)
+    end
+  end
+end