feat(orchestration): Remote Joiner field aliases (#5013)

* initial commit

* chore: unit tests and forward arguments

packages/orchestration/src/__mocks__/joiner/mock_data.ts

@@ -56,6 +56,9 @@ export const serviceConfigs: JoinerServiceConfig[] = [
     alias: {
       name: "variant",
     },
+    fieldAlias: {
+      user_shortcut: "product.user",
+    },
     primaryKeys: ["id"],
     relationships: [
       {
@@ -75,6 +78,12 @@ export const serviceConfigs: JoinerServiceConfig[] = [
   },
   {
     serviceName: "order",
+    fieldAlias: {
+      product_user_alias: {
+        path: "products.product.user",
+        forwardArgumentsOnPath: ["products.product"],
+      },
+    },
     primaryKeys: ["id"],
     relationships: [
       {