Re-organize all projects (#4166)

Content.Server/Destructible/Thresholds/ThresholdActs.cs

@@ -0,0 +1,14 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Server.Destructible.Thresholds
+{
+    [Flags, FlagsFor(typeof(ActsFlags))]
+    [Serializable]
+    public enum ThresholdActs
+    {
+        None = 0,
+        Breakage,
+        Destruction
+    }
+}