Add Next.js ESLint (#425)

* Added Next.js eslint

* added eslint to lint-staged

* Added eslint config for prettier

* Fixed eslint issues in multiple files

* Fixed error in linter

components/product/ProductSidebar/ProductSidebar.tsx

@@ -23,7 +23,7 @@ const ProductSidebar: FC<ProductSidebarProps> = ({ product, className }) => {
 
   useEffect(() => {
     selectDefaultOptionFromProduct(product, setSelectedOptions)
-  }, [])
+  }, [product])
 
   const variant = getProductVariant(product, selectedOptions)
   const addToCart = async () => {