cli: Add pluginPackage support to backend-plugin-module template

Signed-off-by: Vincenzo Scamporlino <vincenzos@spotify.com>

packages/cli-module-new/templates/backend-plugin-module/package.json.hbs

@@ -10,7 +10,8 @@
   },
   "backstage": {
     "role": "backend-plugin-module",
-    "pluginId": "{{pluginId}}"
+    "pluginId": "{{pluginId}}",
+    "pluginPackage": "{{pluginPackage}}"
   },
   "scripts": {
     "start": "backstage-cli package start",

packages/cli-module-new/templates/scaffolder-backend-module/package.json.hbs

@@ -10,7 +10,8 @@
   },
   "backstage": {
     "role": "backend-plugin-module",
-    "pluginId": "scaffolder"
+    "pluginId": "scaffolder",
+    "pluginPackage": "@backstage/plugin-scaffolder-backend"
   },
   "scripts": {
     "start": "backstage-cli package start",

packages/cli-module-new/templates/scaffolder-backend-module/portable-template.yaml

@@ -3,4 +3,5 @@ role: backend-plugin-module
 description: A module exporting custom actions for @backstage/plugin-scaffolder-backend
 values:
   pluginId: scaffolder
+  pluginPackage: '@backstage/plugin-scaffolder-backend'
   moduleVar: '{{ camelCase pluginId }}Module{{ upperFirst ( camelCase moduleId ) }}'