refactor: migrate pricing entities to DML models (#10335)

Fixes: FRMW-2810

## Breaking changes
There is only one breaking change

- The `min_quantity` and `max_quantity` properties are now consistently typed as numbers. Earlier, it was [typed as numbers](https://github.com/medusajs/medusa/blob/develop/integration-tests/http/__tests__/price-list/admin/price-list.spec.ts#L68-L69) in some API responses and as [string in others](https://github.com/medusajs/medusa/blob/develop/integration-tests/http/__tests__/price-list/admin/price-list.spec.ts#L186-L187). I did not go to the bottom of this inconsistency, but the tests reveals them.

Co-authored-by: Adrien de Peretti <25098370+adrien2p@users.noreply.github.com>

integration-tests/http/__tests__/shipping-option/admin/shipping-option.spec.ts

@@ -191,6 +191,7 @@ medusaIntegrationTestRunner({
                 max_quantity: null,
                 min_quantity: null,
                 price_list: null,
+                price_list_id: null,
                 price_set_id: expect.any(String),
                 raw_amount: {
                   precision: 20,
@@ -210,6 +211,7 @@ medusaIntegrationTestRunner({
                 max_quantity: null,
                 min_quantity: null,
                 price_list: null,
+                price_list_id: null,
                 price_set_id: expect.any(String),
                 raw_amount: {
                   precision: 20,