Re-organize all projects (#4166)

Content.Shared/MobState/DamageStateHelpers.cs

@@ -0,0 +1,27 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+
+namespace Content.Shared.MobState
+{
+    public static class DamageStateHelpers
+    {
+        /// <summary>
+        ///     Enumerates over <see cref="DamageState"/>, returning them in order
+        ///     of alive to dead.
+        /// </summary>
+        /// <returns>An enumerable of <see cref="DamageState"/>.</returns>
+        public static IEnumerable<DamageState> AliveToDead()
+        {
+            foreach (DamageState state in Enum.GetValues(typeof(DamageState)))
+            {
+                if (state == DamageState.Invalid)
+                {
+                    continue;
+                }
+
+                yield return state;
+            }
+        }
+    }
+}