Add bin entry points for standalone CLI module execution

Each CLI module package now includes a bin script and cli.ts entry
point, allowing modules to be executed directly via npx without
being wired into the main @backstage/cli package.

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

packages/cli-module-maintenance/package.json

@@ -20,7 +20,8 @@
   "main": "src/index.ts",
   "types": "src/index.ts",
   "files": [
-    "dist"
+    "dist",
+    "bin"
   ],
   "scripts": {
     "build": "backstage-cli package build",
@@ -41,5 +42,6 @@
   "devDependencies": {
     "@backstage/cli": "workspace:^",
     "@types/fs-extra": "^11.0.0"
-  }
+  },
+  "bin": "bin/cli-module-maintenance"
 }