feat(utils,modules-sdk): Remote query object to string array (#5216)

**What**
- transform remote query object back to string array
- get all fields and fields from given relations from a GraphQL schema

Co-authored-by: Carlos R. L. Rodrigues <37986729+carlos-r-l-rodrigues@users.noreply.github.com>

packages/utils/src/common/remote-query-object-to-string.ts

@@ -0,0 +1,51 @@
+/**
+ * Transform a remote query object to a string array containing the chain of fields and relations
+ *
+ * @param fields
+ * @param parent
+ *
+ * @example
+ *
+ * const remoteQueryObject = {
+ *   fields: [
+ *     "id",
+ *     "title",
+ *   ],
+ *   images: {
+ *     fields: ["id", "created_at", "updated_at", "deleted_at", "url", "metadata"],
+ *   },
+ * }
+ *
+ * const fields = remoteQueryObjectToString(remoteQueryObject)
+ *
+ * console.log(fields)
+ * // ["id", "title", "images.id", "images.created_at", "images.updated_at", "images.deleted_at", "images.url", "images.metadata"]
+ */
+export function remoteQueryObjectToString(
+  fields: object,
+  parent?: string
+): string[] {
+  return Object.keys(fields).reduce((acc, key) => {
+    if (key === "fields") {
+      if (parent) {
+        fields[key].map((fieldKey) => acc.push(`${parent}.${fieldKey}`))
+      } else {
+        fields[key].map((fieldKey) => acc.push(fieldKey))
+      }
+
+      return acc
+    }
+
+    if (typeof fields[key] === "object") {
+      acc = acc.concat(
+        remoteQueryObjectToString(
+          fields[key],
+          parent ? `${parent}.${key}` : key
+        )
+      )
+      return acc
+    }
+
+    return acc
+  }, [] as string[])
+}