initPayment
Author: @Jeluchu
Init RevenueCat Configuration
Parameters
apiKey
String In this value you must pass the key generated by RevenueCat to obtain all the information of the products offered to the users
isDebug
Boolean This parameter is used to indicate if the build variant you are using is Debug or not, to show you more or less errors depending on the environment
subscriptionName
String This will be the name you have indicated in RevenueCat for your subscription, inside then you can have different types (Monthly, Annual, etc)