Move AltUnit class to a separate file

Author: Falki-git

MicroEngineerProject/MicroEngineer/Entries/BaseEntry.cs

@@ -182,15 +182,5 @@ public virtual string UnitDisplay
         }
 
         public virtual void RefreshData() { }
-    }
-
-    public class AltUnit
-    {
-        [JsonProperty]
-        public bool IsActive;
-        [JsonProperty]
-        public string Unit;
-        [JsonProperty]
-        public float Factor;
-    }
+    }    
 }

MicroEngineerProject/MicroEngineer/Utilities/AltUnit.cs

@@ -0,0 +1,17 @@
+using Newtonsoft.Json;
+
+namespace MicroMod
+{
+    /// <summary>
+    /// An alternative unit, activated by double-clicking the entry
+    /// </summary>
+    public class AltUnit
+    {
+        [JsonProperty]
+        public bool IsActive;
+        [JsonProperty]
+        public string Unit;
+        [JsonProperty]
+        public float Factor;
+    }
+}