Add support for persistent copilot messages and threads

spec/factories/captain/copilot_message.rb

@@ -0,0 +1,9 @@
+FactoryBot.define do
+  factory :captain_copilot_message, class: 'CopilotMessage' do
+    account
+    user
+    copilot_thread { association :captain_copilot_thread }
+    message { { content: 'This is a test message' } }
+    message_type { 'user' }
+  end
+end

spec/factories/captain/copilot_thread.rb

@@ -0,0 +1,8 @@
+FactoryBot.define do
+  factory :captain_copilot_thread, class: 'CopilotThread' do
+    account
+    user
+    title { Faker::Lorem.sentence }
+    uuid { SecureRandom.uuid }
+  end
+end