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

* initial commit

* chore: unit tests and forward arguments

packages/types/src/joiner/index.ts

@@ -16,6 +16,14 @@ export interface JoinerServiceConfigAlias {
 export interface JoinerServiceConfig {
   serviceName: string
   alias?: JoinerServiceConfigAlias | JoinerServiceConfigAlias[] // Property name to use as entrypoint to the service
+  fieldAlias?: Record<
+    string,
+    | string
+    | {
+        path: string
+        forwardArgumentsOnPath: string[]
+      }
+  > // alias for deeper nested relationships (e.g. { 'price': 'prices.calculated_price_set.amount' })
   primaryKeys: string[]
   relationships?: JoinerRelationship[]
   extends?: {