feat: Android updates for Windows and androidVersionCode output (#478)

* Create android keystore on windows, output android version code

* Add androidVersionCode output test

* Move android keystore decode logic to TS

action.yml

@@ -188,6 +188,8 @@ outputs:
     description: 'The Persistent Volume (PV) where the build artifacts have been stored by Kubernetes'
   buildVersion:
     description: 'The generated version used for the Unity build'
+  androidVersionCode:
+    description: 'The generated versionCode used for the Android Unity build'
 branding:
   icon: 'box'
   color: 'gray-dark'