MKS Gen-L Case

Version 1.2 Update. After printing the case several times, I found a couple of areas that could use improvement. Here's the list of changes:
* Case has a 15 degree slant for the screen mounted in the cover. Identified a number of interference points in the cover that made the fit a bit *tricky*. Re-designed cover to match the slanted case opening and remove all interference points.
* Redesigned all posts located on the walls inside the case to have a gradual build. This removes all the need for *bridging* by the printer. This should make this case print better on the less expensive printers that tent to have trouble with bridging.
* Regenerated STL files to simplify the geometry and decrease file size. As a result, slicers take less time to process the files without precision.
* This is a bit of a vanity change. The name of the box(Sammy Box...) is now only one layer deep(0.2). This drastically improved the quality of the print around the text

Version 1.1 Update. The following i