Revamp 'Grouped Product' feature

[muratcakir]

trafficstars

• [x] Child products listing as collapsible panel
• [x] Shows products details after expanding a pane
• [ ] The pane header displays a configurable amount of content, e.g.:
  • [x] SKU
  • [x] Name
  • [x] Dimensions
  • [x] Add to Cart button
  • [x] Qty input
  • [x] Price
  • [ ] Shared variants or specification attributes (V6)
• [x] Term search
• [ ] Facette filters above the child products listing (V6)