* Move existing Billing SQL files into dbo folder
I noticed that every other team had a nested dbo folder under their team folder while Billing did not. This change replicates that.
* Add SQL files for ClientOrganizationMigrationRecord table
* Add SQL Server migration for ClientOrganizationMigrationRecord table
* Add ClientOrganizationMigrationRecord entity and repository interface
* Add ClientOrganizationMigrationRecord Dapper repository
* Add ClientOrganizationMigrationRecord EF repository
* Add EF migrations for ClientOrganizationMigrationRecord table
* Implement migration process
* Wire up new Admin tool to migrate providers
* Run dotnet format
* Updated coupon and credit application per product request
* AC-3057-3058: Fix expiration date and enabled from webhook processing
* Run dotnet format
* AC-3059: Fix assigned seats during migration
* Updated AllocatedSeats in the case plan already exists
* Update migration scripts to reflect current date
* Add PremiumUserSale
* Add PremiumUserBillingService
* Integrate into UserService behind FF
* Update invoice.created handler to bill newly created PayPal customers
* Run dotnet format
* Getting the fresh invoice if the subscription was updated when validation the families sponsorship
* Getting fresh invoice after validation families sponsorship fails
* Also updating invoice line items
* Expanded Teams and Enterprise plan with provider seat data
* Updated provider setup process with new plan information
* Updated provider subscription retrieval and update with new plan information
* Updated client invoice report with new plan information
* Fixed tests
* Fix broken test
* Refactored the charge succeeded handler a bit
* If refund charge is received, and we don't have a parent transaction stored already, attempt to create one
* Converted else if structure to switch-case
* Moved logic for invoice.upcoming to a private method
* Moved logic for charge.succeeded to a private method
* Moved logic for charge.refunded to a private method
* Moved logic for invoice.payment_succeeded to a private method
* Updated invoice.payment_failed to match the rest
* Updated invoice.created to match the rest with some light refactors
* Added method comment to HandlePaymentMethodAttachedAsync
* Moved logic for customer.updated to a private method
* Updated logger in default case
* Separated customer.subscription.deleted and customer.subscription.updated to be in their own blocks
* Moved logic for customer.subscription.deleted to a private method
* Moved logic for customer.subscription.updated to a private method
* Merged customer sub updated or deleted to switch
* No longer checking if the user has premium before disabling it since the service already checks
* Moved webhook secret parsing logic to private method
* Moved casting of event to specific object down to handler
* Reduced nesting throughout
* When removing secrets manager, now deleting 100% off password manager discount for SM trials
* Added method comment and reduced nesting in RemovePasswordManagerCouponIfRemovingSecretsManagerTrialAsync
* Added feature flag constant
* Wrapped Automatic Tax logic behind feature flag
* Only getting customer if feature is anabled.
* Enabled feature flag in unit tests
* Made IPaymentService scoped
* Added missing StripeFacade calls
* Removed TaxRate logic when creating or updating a Stripe subscription and replaced it with AutomaticTax enabled flag
* Updated Stripe webhook to update subscription to automatically calculate tax
* Removed TaxRate unit tests since Stripe now handles tax
* Removed test proration logic
* Including taxInfo when updating payment method
* Adding the address to the upgrade free org flow if it doesn't exist
* Fixed failing tests and added a new test to validate that the customer is updated
* Add Organization_ReadOwnerEmailAddresses SPROC
* Add IOrganizationRepository.GetOwnerEmailAddressesById
* Add SendInvoiceUpcoming overload for multiple emails
* Update InvoiceUpcoming handler to send multiple emails
* Cy's feedback
* Updates from testing
Hardened against missing entity IDs in Stripe events in the StripeEventService. Updated ValidateCloudRegion to not use a refresh/expansion for the customer because the invoice.upcoming event does not have an invoice.Id. Updated the StripeController's handling of invoice.upcoming to not use a refresh/expansion for the subscription because the invoice does not have an ID.
* Fix broken test
