Add api for sentry error tracking settings

lib/api/api.rb

@@ -117,6 +117,7 @@ module API
     mount ::API::DeployKeys
     mount ::API::Deployments
     mount ::API::Environments
+    mount ::API::ErrorTracking
     mount ::API::Events
     mount ::API::Features
     mount ::API::Files

lib/api/error_tracking.rb

+# frozen_string_literal: true
+
+module API
+  class ErrorTracking < Grape::API
+    before { authenticate! }
+
+    params do
+      requires :id, type: String, desc: 'The ID of a project'
+    end
+
+    resource :projects, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
+      desc 'Get sentry error tracking settings for the project' do
+        success Entities::SentryProjectErrorTrackingSettings
+      end
+
+      get ':id/error_tracking/sentry_project_settings' do
+        authorize! :read_sentry_issue, user_project
+
+        sentry_project_settings = user_project.error_tracking_setting
+        present sentry_project_settings, with: Entities::SentryProjectErrorTrackingSettings
+      end
+    end
+  end
+end