Re-organize all projects (#4166)

Content.Shared/Flash/SharedFlashableComponent.cs

@@ -0,0 +1,27 @@
+#nullable enable
+using System;
+using Content.Shared.NetIDs;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Flash
+{
+    public class SharedFlashableComponent : Component
+    {
+        public override string Name => "Flashable";
+        public override uint? NetID => ContentNetIDs.FLASHABLE;
+    }
+
+    [Serializable, NetSerializable]
+    public class FlashComponentState : ComponentState
+    {
+        public double Duration { get; }
+        public TimeSpan Time { get; }
+
+        public FlashComponentState(double duration, TimeSpan time) : base(ContentNetIDs.FLASHABLE)
+        {
+            Duration = duration;
+            Time = time;
+        }
+    }
+}