feat: Response Bot using GPT and Webpage Sources (#7518)

This commit introduces the ability to associate response sources to an inbox, allowing external webpages to be parsed by Chatwoot. The parsed data is converted into embeddings for use with GPT models when managing customer queries.

The implementation relies on the `pgvector` extension for PostgreSQL. Database migrations related to this feature are handled separately by `Features::ResponseBotService`. A future update will integrate these migrations into the default rails migrations, once compatibility with Postgres extensions across all self-hosted installation options is confirmed.

Additionally, a new GitHub action has been added to the CI pipeline to ensure the execution of specs related to this feature.

spec/enterprise/controllers/enterprise/api/v1/accounts/inboxes_controller_spec.rb

@@ -43,4 +43,44 @@ RSpec.describe 'Enterprise Inboxes API', type: :request do
       end
     end
   end
+
+  describe 'GET /api/v1/accounts/{account.id}/inboxes/{inbox.id}/response_sources' do
+    let(:inbox) { create(:inbox, account: account) }
+    let(:agent) { create(:user, account: account, role: :agent) }
+    let(:administrator) { create(:user, account: account, role: :administrator) }
+
+    before do
+      skip('Skipping since vector is not enabled in this environment') unless Features::ResponseBotService.new.vector_extension_enabled?
+    end
+
+    context 'when it is an unauthenticated user' do
+      it 'returns unauthorized' do
+        get "/api/v1/accounts/#{account.id}/inboxes/#{inbox.id}/response_sources"
+
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
+
+    context 'when it is an authenticated user' do
+      it 'returns unauthorized for agents' do
+        get "/api/v1/accounts/#{account.id}/inboxes/#{inbox.id}/response_sources",
+            headers: agent.create_new_auth_token,
+            as: :json
+
+        expect(response).to have_http_status(:unauthorized)
+      end
+
+      it 'returns all response_sources belonging to the inbox to administrators' do
+        response_source = create(:response_source, account: account, inbox: inbox)
+        get "/api/v1/accounts/#{account.id}/inboxes/#{inbox.id}/response_sources",
+            headers: administrator.create_new_auth_token,
+            as: :json
+
+        expect(response).to have_http_status(:success)
+        body = JSON.parse(response.body, symbolize_names: true)
+        expect(body.first[:id]).to eq(response_source.id)
+        expect(body.length).to eq(1)
+      end
+    end
+  end
 end