Added setup-msstore-cli GitHub Action.

Author: azchohfi

hub/apps/publish/msstore-dev-cli/ci-cd-environments.md

@@ -22,13 +22,15 @@ For example:
 
 ```yaml
 - script: msstore reconfigure --tenantId $(PARTNER_CENTER_TENANT_ID) --sellerId $(PARTNER_CENTER_SELLER_ID) --clientId $(PARTNER_CENTER_CLIENT_ID) --clientSecret $(PARTNER_CENTER_CLIENT_SECRET)
-  displayName: Setup Microsoft Store Developer CLI
+  displayName: Configure Microsoft Store Developer CLI
 ```
 
 ## GitHub Actions
 
 ```yaml
 - name: Setup Microsoft Store Developer CLI
+  uses: microsoft/setup-msstore-cli@v1
+- name: Configure Microsoft Store Developer CLI
   run: msstore reconfigure --tenantId ${{ secrets.PARTNER_CENTER_TENANT_ID }} --sellerId ${{ secrets.PARTNER_CENTER_SELLER_ID }} --clientId ${{ secrets.PARTNER_CENTER_CLIENT_ID }} --clientSecret ${{ secrets.PARTNER_CENTER_CLIENT_SECRET }}
 ```