This commit introduces the updateSubscription method to the BillingStrategyProviderService, ensuring that subscriptions can be updated within the billing core. Additionally, a refactor has been applied to the BillingGatewayFactoryService and stripe-billing-strategy.service to improve error handling and the robustness of subscription updates. Logging in the webhook route has been adjusted for clarity and the data model has been enhanced.
This commit has modified the mailer system to allow flexible mailer selection according to the environment variable. Previously, it was set to use only 'Nodemailer' irrespective of the environment. Now, it has the ability to switch between 'Nodemailer' and 'CloudflareMailer' depending on the environment, facilitating better testing in diverse conditions.
