AMS/AMS 2 pro Universal Stand + Gridfinity/Plates

Now fits both AMS & AMS 2 pro!There have been at least 6 versions of the AMS Bottom Cover Unit, each with variations on the number and size of vertical wall cavities, and now the AMS 2 pro has different dimensions, and wall cavity configuration. Because of this, it's difficult for both modelers and makers to get the right fit. While discussing remix option of my previous design with @bedebe, I decided to try to solve that issue. I've also provided options for an integrated build plate holder and side brace, with or without Gridfinity bases and/or braces. That worked for the original AMS, but not for the AMS2, so I've modified to fit both. While discussing additional options with @AJarrett46, we came up with the middle brace for the third tier, the wide bracket and brace options for added stability (without requiring additional 2020 Aluminum Profiles), and I modified the braces and brackets to resemble 2020 profiles. You can find my custom bins in my Gridfinity Collection. F