feat: standalone binary (#92)

* feat: add an option to install the self-contained binary version of pnpm

* test: add a test about nodejs_bundled

* style: remove an empty line

* chore: use newer pnpm

* chore: update dependencies

* feat: rename `nodejs_bundled` to `standalone`

as @zkochan suggested

* docs: add

---------

Co-authored-by: Takashi Sato <takashi@tks.st>

action.yml

@@ -16,9 +16,13 @@ inputs:
     required: false
     default: 'null'
   package_json_file:
-    description: File path to the package.json to read "packageManager" configutation
+    description: File path to the package.json to read "packageManager" configuration
     required: false
     default: 'package.json'
+  standalone:
+    description: When set to true, @pnpm/exe, which is a Node.js bundled package, will be installed, enabling using pnpm without Node.js.
+    required: false
+    default: 'false'
 runs:
   using: node16
   main: dist/index.js