for some helpers like display_checkout_taxes_hash, it's needed to access the tax rates through the adjument's originator.
The adjustment's originator will store the minimal details: id, type and amount
For every adjustment a list of tax rates will be created using TaxRateFinder.tax_rates_of.
This will prevent running the queries to find the tax rates during the invoice generation.
There are three main components:
1. The invoice model
2. order serializers: serialize the order for the invoice
3. data presenters: the object that will be use to access the order's serialize data
