feat: /store api product types (#2552)

## What
Allow users to fetch ProductTypes from the storefront API.

## Why
This endpoint will allow developers to implement better faceted product search in Medusa without the need for search plugin. Developers will be able to use this to render refinement lists based on types, like this:
![image](https://user-images.githubusercontent.com/116003638/200417828-863065de-3607-49db-bd72-62a6815129fa.png)

## How
Endpoint `GET /store/products/types` and `GET /store/product-types` (use [product types listing in admin](https://github.com/medusajs/medusa/blob/master/packages/medusa/src/api/routes/admin/products/list-types.ts) as reference)

Support added in @medusajs/medusa-js
Support added in medusa-react

## Testing
Similar automated tests as `GET /admin/products/types` and `GET /admin/product-types`

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Resolves CORE-699

.changeset/early-birds-juggle.md

@@ -0,0 +1,7 @@
+---
+"@medusajs/medusa": patch
+"@medusajs/medusa-js": patch
+"medusa-react": patch
+---
+
+feat(medusa, medusa-js, medusa-react): /store api product types