feat: medusa js admin shipping options (#934)

* add: shipping-options admin endpoint to medusa-js

* fix: retrieve return type for Collections

* fix typo in routes

Co-authored-by: Sebastian Rindom <seb@medusajs.com>

packages/medusa/src/api/index.js

@@ -31,7 +31,9 @@ export * from "./routes/admin/orders"
 export * from "./routes/admin/variants"
 export * from "./routes/admin/return-reasons"
 export * from "./routes/admin/swaps"
+export * from "./routes/admin/shipping-options"
 export * from "./routes/admin/regions"
+
 // Store
 export * from "./routes/store/auth"
 export * from "./routes/store/carts"