* Steps
-> Add Dependency
~ implementation "com.android.billingclient:billing-ktx:$billing_version"
-> Upload your App
-> Create and configure your products (On Console)
~ For each product, you need to provide a unique product ID, a title,
a description, and pricing information.
~ Subscriptions have additional required information, such as selecting
whether it's an auto-renewing or prepaid renewal type for the base plan.
1) Initialize Billing Client
~ It is the main interface for communication between the Google Play
Billing Library and the rest of your app.
2) Start Connection
~ Connection Setup Disconnected
~ Connection Setup Finished
3) Query all available products detail by giving list of product_id.
// Make Purchase
4) Query all available products detail by giving list of product_id.
5) Launch billing flow (bottomSheet)
6) Get Response, save it in SharedPreference or else
