Google Play Billing Integration for Android App (Median.co)

Hi, I converted my web app into an Android app using Median.co and I need to add Google Play Billing for an in-app premium subscription.

My setup is:

web app built in Lovable
Android app generated through Median
Stripe is used only on my website for business promotion payments
Google Play Billing should be used only inside the Android app for premium subscriptions

I need to know:

Does my current Median app support Google Play Billing integration?
Do you already have a built-in plugin/module for Google Play Billing?
If yes, how can I trigger the purchase flow from my web code through the Median JavaScript Bridge?
If not, can your team add custom native Google Play Billing support to my app?
Can the purchase result and purchase token be returned back to my web app so I can verify it on my backend and unlock premium access?

I want to sell a monthly premium subscription in Google Play with product ID: premium_monthly.