chore: enable alpha types for publishing of alpha packages for scaffolder plugins

Signed-off-by: blam <ben@blam.sh>

plugins/scaffolder/package.json

@@ -9,7 +9,8 @@
   "publishConfig": {
     "access": "public",
     "main": "dist/index.esm.js",
-    "types": "dist/index.d.ts"
+    "types": "dist/index.d.ts",
+    "alphaTypes": "dist/index.alpha.d.ts"
   },
   "backstage": {
     "role": "frontend-plugin"
@@ -24,7 +25,7 @@
     "backstage"
   ],
   "scripts": {
-    "build": "backstage-cli package build",
+    "build": "backstage-cli package build --experimental-type-build",
     "start": "backstage-cli package start",
     "lint": "backstage-cli package lint",
     "test": "backstage-cli package test",
@@ -90,6 +91,7 @@
     "msw": "^0.35.0"
   },
   "files": [
-    "dist"
+    "dist",
+    "alpha"
   ]
 }

plugins/scaffolder/src/plugin.ts

@@ -151,6 +151,10 @@ export const EntityTagsPickerFieldExtension = scaffolderPlugin.provide(
   }),
 );
 
+/**
+ * @alpha
+ * The Router and main entrypoint to the Alpha Scaffolder plugin.
+ */
 export const NextScaffolderPage = scaffolderPlugin.provide(
   createRoutableExtension({
     name: 'NextScaffolderPage',