Screwless low profile case with magsafe support for AliExpress kit

This is yet another remix of the original silakka54 case, which works great already for the AliExpress kit, with some added features (some of which already exist in other remixes as well, but are kinda brought together in this one):

• Screwless — this uses built-in dowels in place of the screw holes.
• Unibody top frame — merged the top frame and mcu cover (full) from the original model, with raised cover so it can fit the AliExpress kit. It'll be slightly harder to assemble, but it provides a better look overall
• Lower profile — not the smallest silakka54 case out there, but it's lower and more compact than the original
• Magsafe support — you can buy magsafe rings separately and put it in the slot I've provided in the base model.

Also contains some optional parts you can print that wasn't included in the original design:

• Base plate — this replaces the plate from aliexpress. if you use the magsafe base, this helps cover the ring so it stays in place, but you can also just use the one from aliexpress.
• Keycap spacer — this also replaces the spacer thingy from aliexpress, as the one there is not tall enough to cover the keycap and make it rattle during typing.
• Magsafe base — you most likely don't need this one unless you have a specific magsafe stand like I have, one with tiny and unstable base but can be disassembled to replace with this one.

Most likely, you only want to print these two files:

• base.stl
• top_frame.stl