Re-organize all projects (#4166)

Content.Client/Stylesheets/StylesheetManager.cs

@@ -0,0 +1,23 @@
+using Robust.Client.ResourceManagement;
+using Robust.Client.UserInterface;
+using Robust.Shared.IoC;
+
+namespace Content.Client.Stylesheets
+{
+    public sealed class StylesheetManager : IStylesheetManager
+    {
+        [Dependency] private readonly IUserInterfaceManager _userInterfaceManager = default!;
+        [Dependency] private readonly IResourceCache _resourceCache = default!;
+
+        public Stylesheet SheetNano { get; private set; } = default!;
+        public Stylesheet SheetSpace { get; private set; } = default!;
+
+        public void Initialize()
+        {
+            SheetNano = new StyleNano(_resourceCache).Stylesheet;
+            SheetSpace = new StyleSpace(_resourceCache).Stylesheet;
+
+            _userInterfaceManager.Stylesheet = SheetNano;
+        }
+    }
+}