Add Reaction Commerce provider

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

framework/reactioncommerce/utils/queries/catalog-items-query.ts

@@ -0,0 +1,67 @@
+export const catalogItemsConnection = `
+pageInfo {
+  hasNextPage
+  hasPreviousPage
+}
+edges {
+  node {
+    _id
+    ... on CatalogItemProduct {
+      product {
+        _id
+        title
+        slug
+        description
+        vendor
+        isLowQuantity
+        isSoldOut
+        isBackorder
+        shop {
+          currency {
+            code
+          }
+        }
+        pricing {
+          currency {
+            code
+          }
+          displayPrice
+          minPrice
+          maxPrice
+        }
+        primaryImage {
+          URLs {
+            thumbnail
+            small
+            medium
+            large
+            original
+          }
+        }
+      }
+    }
+  }
+}`
+
+export const catalogItemsFragment = `
+catalogItems(
+  first: $first
+  sortBy: $sortBy
+  tagIds: $tagIds
+  shopIds: $shopIds
+) {
+  ${catalogItemsConnection}
+}
+`
+
+const catalogItemsQuery = /* GraphQL */ `
+  query catalogItems(
+    $first: ConnectionLimitInt = 250
+    $sortBy: CatalogItemSortByField = updatedAt
+    $tagIds: [ID]
+    $shopIds: [ID]!
+  ) {
+    ${catalogItemsFragment}
+  }
+`
+export default catalogItemsQuery