backend-plugin-api: add new root lifecycle service + impl

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/backend-defaults/src/CreateBackend.ts

@@ -23,6 +23,7 @@ import {
   discoveryFactory,
   httpRouterFactory,
   lifecycleFactory,
+  rootLifecycleFactory,
   loggerFactory,
   permissionsFactory,
   rootLoggerFactory,
@@ -45,6 +46,7 @@ export const defaultServiceFactories = [
   urlReaderFactory,
   httpRouterFactory,
   lifecycleFactory,
+  rootLifecycleFactory,
 ];
 
 /**