* Add explicit `supportsSaveForFutureUseCheckbox` and make the form factory use that

* Add explicit `supportsSavedPaymentMethod`

* Remove supportsSaveAndReuse, put requirements in supportsAdding.

* Allow paypal to be set up. Continue to disallow it as a saved payment method, and continue to not show a 'save for future use checkbox' for it.

* DRY mandate data creation and use it if setting up paypal

* Refactor SEPA, Cashapp mandate views to single SimpleMandateTextView, add paypal mandate

* CHANGELOG

* Lint and run localized string

* lint

* Fix typo in changelog

* fix lint?