SFCC provider (#727)

* new SFCC provider

* add search

* normalization + search

* categories as search results

* adress PR feedback

* Update README.md

* get all paths for SSG

* product variants and options

* Apply suggestions from code review

Co-authored-by: Luis Alvarez D. <luis@vercel.com>

* remove console log

* prettier

* clean console log

* ran prettier

* Updated readme

* remove static data and revert config changes

* set default site

Co-authored-by: Luis Alvarez D. <luis@vercel.com>

packages/sfcc/README.md

@@ -0,0 +1,38 @@
+# Next.js SalesForce Cloud Commerce Provider
+
+## Installation
+
+1. Copy the `.env.template` file in this directory to `/site/.env.local` in the main directory
+2. Run `yarn` and then `yarn dev` in root folder
+
+## Features:
+
+```json
+{
+  "provider": "sfcc",
+  "features": {
+    "wishlist": false,
+    "cart": false,
+    "search": true,
+    "customerAuth": false,
+    "customCheckout": false
+  }
+}
+```
+
+## References
+
+- SDK: https://github.com/SalesforceCommerceCloud/commerce-sdk
+- isomorphic SDK (currently not used atm): https://github.com/SalesforceCommerceCloud/commerce-sdk-isomorphic
+- PWA Kit storefront example: https://pwa-kit.mobify-storefront.com/
+
+## Training Material and Documentation:
+
+For a detailed introduction into commerce clouds feature set and data setup please refer to our Training Material and Documentation:
+
+- [Salesforce Trailhead for B2C Commerce Cloud](https://trailhead.salesforce.com/en/content/learn/trails/cc-overview)
+- [Salesforce Trailhead for Development on B2C Commerce Cloud](https://trailhead.salesforce.com/en/content/learn/trails/develop-for-commerce-cloud)
+- [B2C Commerce Cloud Documentation](https://documentation.b2c.commercecloud.salesforce.com/DOC1/index.jsp)
+- [B2C Commerce Cloud Open Commerce API Doc](https://documentation.b2c.commercecloud.salesforce.com/DOC1/topic/com.demandware.dochelp/OCAPI/current/usage/OpenCommerceAPI.html?cp=0_15)
+- [Developer Center for Commerce Cloud (Commerce APIs specifically)](https://developer.salesforce.com/docs/commerce/commerce-api/overview)
+- [SLAS Org Admin Setup Guide](https://developer.salesforce.com/docs/commerce/commerce-api/references?meta=slas-admin:Summary)