Rugged Gridfinity Box Lid with Insert

Rugged Gridfinity Box lids merged with the Rugged Gridfinity Box Lid Inserts by @Zanfar. Note that with the original inserts, the top row of containers in the box cannot have a lip because they would collide with the insert and prevent closure. I've removed some of the insert in the trimmed versions to fix this issue, but the top row won't be completely covered unless the containers have a lip.