docs: added tax-inclusive conceptual guide and updates to storefront guide (#8186)

* docs: added tax-inclusive conceptual guide and updates to storefront guide

* sentence fix

* currency_code -> country_code

www/apps/resources/app/commerce-modules/pricing/price-calculation/page.mdx

@@ -1,7 +1,7 @@
 import { Tabs, TabsList, TabsTrigger, TabsContent, TabsContentWrapper, TypeList } from "docs-ui"
 
 export const metadata = {
-  title: `Prices Calculation Strategy`,
+  title: `Prices Calculation`,
 }
 
 # {metadata.title}
@@ -77,6 +77,16 @@ Both prices are returned in an object along with the following properties:
       type: "`string`",
       description: "The currency code of the calculated price, or `null` if there isn't a calculated price."
     },
+    {
+      name: "is_calculated_price_tax_inclusive",
+      type: "`boolean`",
+      description: "Whether the calculated price is tax inclusive. Learn more about tax-inclusivity in [this document](../tax-inclusive-pricing/page.mdx)"
+    },
+    {
+      name: "is_original_price_tax_inclusive",
+      type: "`boolean`",
+      description: "Whether the original price is tax inclusive. Learn more about tax-inclusivity in [this document](../tax-inclusive-pricing/page.mdx)"
+    },
     {
       name: "calculated_price",
       type: "`object`",
@@ -224,6 +234,9 @@ const priceSet = await pricingModuleService.createPriceSets({
 
       currency_code: "EUR",
 
+      is_calculated_price_tax_inclusive: false,
+      is_original_price_tax_inclusive: false,
+
       calculated_price: {
         price_id: "<DEFAULT_PRICE_ID>",
         price_list_id: null,
@@ -288,6 +301,9 @@ const priceSet = await pricingModuleService.createPriceSets({
 
       currency_code: "EUR",
 
+      is_calculated_price_tax_inclusive: false,
+      is_original_price_tax_inclusive: false,
+
       calculated_price: {
         price_id: "<FOURTH_PRICE_ID>",
         price_list_id: null,
@@ -375,6 +391,9 @@ const priceSet = await pricingModuleService.createPriceSets({
 
       currency_code: "EUR",
 
+      is_calculated_price_tax_inclusive: false,
+      is_original_price_tax_inclusive: false,
+
       calculated_price: {
         price_id: "<FOURTH_PRICE_ID>",
         price_list_id: null,