feat: notify owner about failed autobuild (#13891)

coderd/database/migrations/000226_notifications_autobuild_failed.down.sql

@@ -0,0 +1 @@
+DELETE FROM notification_templates WHERE id = '381df2a9-c0c0-4749-420f-80a9280c66f9';

coderd/database/migrations/000226_notifications_autobuild_failed.up.sql

@@ -0,0 +1,9 @@
+INSERT INTO notification_templates (id, name, title_template, body_template, "group", actions)
+VALUES ('381df2a9-c0c0-4749-420f-80a9280c66f9', 'Workspace Autobuild Failed', E'Workspace "{{.Labels.name}}" autobuild failed',
+        E'Hi {{.UserName}}\n\Automatic build of your workspace **{{.Labels.name}}** failed.\nThe specified reason was "**{{.Labels.reason}}**".',
+        'Workspace Events', '[
+        {
+            "label": "View workspace",
+            "url": "{{ base_url }}/@{{.UserName}}/{{.Labels.name}}"
+        }
+    ]'::jsonb);