Re-organize all projects (#4166)

Content.Server/GameTicking/Presets/PresetSandbox.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+using Content.Server.Sandbox;
+using Robust.Server.Player;
+using Robust.Shared.IoC;
+
+namespace Content.Server.GameTicking.Presets
+{
+    [GamePreset("sandbox")]
+    public sealed class PresetSandbox : GamePreset
+    {
+        [Dependency] private readonly ISandboxManager _sandboxManager = default!;
+
+        public override bool Start(IReadOnlyList<IPlayerSession> readyPlayers, bool force = false)
+        {
+            _sandboxManager.IsSandboxEnabled = true;
+            return true;
+        }
+
+        public override string ModeTitle => "Sandbox";
+        public override string Description => "No stress, build something!";
+    }
+}