Merge pull request #2881 from Marvin9/chore/use-catalog-api

chore: use catalog API to fetch entity in scaffolder-backend

.changeset/weak-otters-love.md

@@ -0,0 +1,16 @@
+---
+'@backstage/plugin-scaffolder': minor
+'@backstage/plugin-scaffolder-backend': minor
+---
+
+`createRouter` of scaffolder backend will now require additional option as `entityClient` which could be generated by `CatalogEntityClient` in `plugin-scaffolder-backend` package. Here is example to generate `entityClient`.
+
+```js
+import { CatalogEntityClient } from '@backstage/plugin-scaffolder-backend';
+import { SingleHostDiscovery } from '@backstage/backend-common';
+
+const discovery = SingleHostDiscovery.fromConfig(config);
+const entityClient = new CatalogEntityClient({ discovery });
+```
+
+- Scaffolder's API `/v1/jobs` will accept `templateName` instead of `template` Entity.