Feat(medusa): search orders by customer phone and name (#2913)

* add support for customer first- and last names and phone

* test for querying customer first_name, last_name and phone

* add customer as prop for querying orders

* polishing before pr

* changeset

.changeset/light-cars-smile.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+Make orders queryable by customer fields