feat(medusa,types): added store apis for products (#7144)

what:

- adds products list api
- adds products retrieve api

RESOLVES CORE-2016

packages/medusa/src/api-v2/utils/refetch-entity.ts

@@ -0,0 +1,46 @@
+import { MedusaContainer } from "@medusajs/types"
+import {
+  ContainerRegistrationKeys,
+  isString,
+  remoteQueryObjectFromString,
+} from "@medusajs/utils"
+
+export const refetchEntities = async (
+  entryPoint: string,
+  idOrFilter: string | object,
+  scope: MedusaContainer,
+  fields: string[]
+) => {
+  const remoteQuery = scope.resolve(ContainerRegistrationKeys.REMOTE_QUERY)
+  const filters = isString(idOrFilter) ? { id: idOrFilter } : idOrFilter
+  let context: object = {}
+
+  if ("context" in filters) {
+    if (filters.context) {
+      context = filters.context!
+    }
+
+    delete filters.context
+  }
+
+  let variables = { filters, ...context }
+
+  const queryObject = remoteQueryObjectFromString({
+    entryPoint,
+    variables,
+    fields,
+  })
+
+  return await remoteQuery(queryObject)
+}
+
+export const refetchEntity = async (
+  entryPoint: string,
+  idOrFilter: string | object,
+  scope: MedusaContainer,
+  fields: string[]
+) => {
+  const [entity] = await refetchEntities(entryPoint, idOrFilter, scope, fields)
+
+  return entity
+}