feat(payment_methods_list): add is_tax_connector_enabled boolean value in payment_methods_list call response (#5707)

Co-authored-by: Sagnik Mitra <sagnik.mitra@sagnikmitra-JNWPH6GQ9R.local>
Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/api_models/src/payment_methods.rs

@@ -1482,6 +1482,9 @@ pub struct PaymentMethodListResponse {
 
     /// flag that indicates whether to collect billing details from wallets or from the customer
     pub collect_billing_details_from_wallets: Option<bool>,
+
+    /// flag that indicates whether to calculate tax on the order amount
+    pub is_tax_calculation_enabled: bool,
 }
 
 #[derive(Eq, PartialEq, Hash, Debug, serde::Deserialize, ToSchema)]

crates/api_models/src/payments.rs

@@ -560,6 +560,9 @@ pub struct PaymentsRequest {
         example = "Custom_Order_id_123"
     )]
     pub merchant_order_reference_id: Option<String>,
+
+    /// Whether to calculate tax for this payment intent
+    pub skip_external_tax_calculation: Option<bool>,
 }
 
 /// Checks if the inner values of two options are equal