Core - Add HidSharp to force plugins to share the HidSharp types

Core - For now, set default log level to debug
ColorGradient- Improved GetColor performance
ColorGradient - GetColor now handles colors not between two stops properly
Home - Fix links
Plugins - Only allow layer property registration through Brushes
Color brush - Default to solid color

src/Artemis.UI/Screens/Home/HomeViewModel.cs

@@ -14,7 +14,10 @@ namespace Artemis.UI.Screens.Home
         {
             // Don't open anything but valid URIs
             if (Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute))
-                Process.Start(url);
+            {
+                url = url.Replace("&", "^&");
+                Process.Start(new ProcessStartInfo("cmd", $"/c start {url}") {CreateNoWindow = true});
+            }
         }
     }
 }