chore: Refactor types and add tests to parts of price calcuations
* Add tests to sumPackages
* Refactor types and add tests to getAdditionalPrice
* Don't always generate coverage
* Add tests and refactor types of getRedemptionPrice
Approved-by: Joakim Jäderberg
feat(SW-3526): Show EB points rate and label in booking flow
* feat(SW-3526): Show EB points rate and label in booking flow
* feat(SW-3526) Optimized points currency code
* feat(SW-3526) Removed extra multiplication for token expiry after rebase
* feat(SW-3526): Updated to exhaustive check and thow if type error
Approved-by: Anton Gunnarsson