Add feature flag for the POS refunds project

Author: toupper

Modules/Sources/Experiments/DefaultFeatureFlagService.swift

@@ -102,6 +102,8 @@ public struct DefaultFeatureFlagService: FeatureFlagService {
             return true
         case .pointOfSaleCatalogAPI:
             return false
+        case .pointOfSaleRefundsi1:
+            return buildConfig == .localDeveloper || buildConfig == .alpha
         default:
             return true
         }

Modules/Sources/Experiments/FeatureFlag.swift

@@ -211,4 +211,8 @@ public enum FeatureFlag: Int {
     /// Enables using the catalog API endpoint for Point of Sale catalog full sync
     ///
     case pointOfSaleCatalogAPI
+
+    /// Enables the refunds functionality within POS
+    ///
+    case pointOfSaleRefundsi1
 }