* feat: add `hasPaywall` getter to `Offering`
Returns `true` if the offering has either a v1 or a v2 paywall
* docs: update some methods references changing `PaywallData` with "paywall", as `PaywallData` only refers to v1 paywalls
* docs: improve reference of `Offering`'s `paywall` and `paywallComponents` to mention the new `hasPaywall` property
* lint
* tests: add unit tests that check the `hasPaywall` property of `Offering`
* api tests: add `paywallComponents` and `hasPaywall` to SwiftAPITester
* Added tests
* Removed compiler flags because extra work to handle this on CI unit tests when we are releasing this soon and this isn't really that dangerous
* Fix lint
* Some naming improvements
* Passing UIConfig into Offering
* Reorged some data structures
* Fixed some lint
* This
Antonio Pallares