scaffolder: add default route targets

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

.changeset/warm-mayflies-yell.md

@@ -0,0 +1,8 @@
+---
+'@backstage/plugin-scaffolder': minor
+---
+
+Added the following default targets for external routes:
+
+- `registerComponent` binds to the catalog import page.
+- `viewTechDoc` binds to the TechDocs entity documentation page.

plugins/scaffolder/src/routes.ts

@@ -22,12 +22,14 @@ import {
 export const registerComponentRouteRef = createExternalRouteRef({
   id: 'register-component',
   optional: true,
+  defaultTarget: 'catalog-import.importPage',
 });
 
 export const viewTechDocRouteRef = createExternalRouteRef({
   id: 'view-techdoc',
   optional: true,
   params: ['namespace', 'kind', 'name'],
+  defaultTarget: 'techdocs.docRoot',
 });
 
 /**