Reorganize scripts into subfolders by responsibility

Move scripts under Assets/Scripts/ into Components, GameMode, Helper,
Network, Enum, Struct and ScriptableObject folders. Pure file moves
(plus folder .meta files); no code changes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Assets/Scripts/GameMode/PlayerControlMode.cs

@@ -0,0 +1,18 @@
+/// <summary>
+/// Player walks with WASD/Space, the camera orbits freely with the mouse.
+/// Painting is disabled.
+/// </summary>
+public class PlayerControlMode : GameMode
+{
+    public override string DisplayName => "Player Control";
+
+    public override void Enter()
+    {
+        SetPlayerControl(true);
+
+        if (Manager.CameraInput)
+            Manager.CameraInput.LookMode = ThirdPersonOrbitInput.OrbitLookMode.AlwaysActive;
+
+        SetPainting(false);
+    }
+}