Add Reaction Commerce provider

Signed-off-by: Loan Laux <loan@outgrow.io>

framework/reactioncommerce/utils/queries/get-all-product-vendors-query.ts

@@ -0,0 +1,17 @@
+const getAllProductVendors = /* GraphQL */ `
+  query getAllProductVendors($first: Int = 250, $cursor: String) {
+    products(first: $first, after: $cursor) {
+      pageInfo {
+        hasNextPage
+        hasPreviousPage
+      }
+      edges {
+        node {
+          vendor
+        }
+        cursor
+      }
+    }
+  }
+`
+export default getAllProductVendors