fix: cart delete mutation and console warnings

- Fix checkoutLinesDelete mutation: use 'id' param and 'linesIds' instead of 'lineIds'
- Fix viewport metadata warning: move to separate viewport export in layout.tsx
- Add sizes prop to checkout Image with fill
- Fix CartDrawer init checkout useEffect to prevent re-render loops
- Various product detail improvements

src/lib/saleor/index.ts

@@ -28,6 +28,7 @@ export {
   getProducts,
   getProductBySlug,
   getProductPrice,
+  getProductPriceAmount,
   getProductImage,
   isProductAvailable,
   formatPrice,