Introduce example for a more flexible deserialization

Also make the CoverGenerator themes serializeable
Rest is automatic reformatting.

VocaluxeLib/CFont.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Xml.Serialization;
 
 namespace VocaluxeLib
 {
@@ -8,6 +9,13 @@ namespace VocaluxeLib
         void FontChanged();
     }
 
+    public struct SThemeFont
+    {
+        public string Name;
+        public EStyle Style;
+        public float Size;
+    }
+
     public class CFont
     {
         private string _Name;
@@ -59,11 +67,11 @@ namespace VocaluxeLib
             _Height = 25f;
         }
 
-        public CFont(CFont font)
+        public CFont(SThemeFont font)
         {
             _Name = font.Name;
             _Style = font.Style;
-            _Height = font.Height;
+            _Height = font.Size;
         }
 
         public CFont(string fontFamily, EStyle style, float h)