feat(core-flows): calculate SO price on cart ops (#10563)

**What**
- calculate the shipping option price when creating a shipping method
- calculate the shipping option price when refreshing cart
- add testing for calculated SO flow
- fix validation on calculated SO creation
- add manual fulfillment provider for testing
- add `from_location` to calculation context

---

RESOLVES CMRC-778
RESOLVES CMRC-602
RESOLVES SUP-136

packages/medusa/src/api/store/shipping-options/[id]/calculate/route.ts

@@ -27,5 +27,11 @@ export const POST = async (
   const shippingOption = data[0]
   const priceData = result[0]
 
-  res.status(200).json({ shipping_option: { ...shippingOption, ...priceData } })
+  shippingOption.calculated_price = priceData
+
+  // ensure same shape as flat rate shipping options
+  shippingOption.amount = priceData.calculated_amount
+  shippingOption.is_tax_inclusive = priceData.is_calculated_price_tax_inclusive
+
+  res.status(200).json({ shipping_option: shippingOption })
 }

packages/medusa/src/api/store/shipping-options/validators.ts

@@ -26,5 +26,5 @@ export type StoreCalculateShippingOptionPriceType = z.infer<
 >
 export const StoreCalculateShippingOptionPrice = z.object({
   cart_id: z.string(),
-  data: z.record(z.string(), z.unknown()),
+  data: z.record(z.string(), z.unknown()).optional(),
 })