rework SymbolFactory

- rename & move to Pilz.UI..Telerik.Symbols.RadSymbolFactory
- make default implementaiton available at Pilz.UI.Symbols.SymbolFactory
- add interfaces

Pilz.UI.Telerik/Symbols/RadSymbolFactory.cs

@@ -0,0 +1,55 @@
+using Pilz.UI.Symbols;
+using Telerik.WinControls;
+
+namespace Pilz.UI.Telerik.Symbols;
+
+public abstract class RadSymbolFactory<TSymbols> : SymbolFactory<TSymbols>, IRadSymbolFactory<TSymbols>
+{
+    public virtual RadSvgImage GetSvgImage(TSymbols svgImage, Size size)
+    {
+        using var stream = GetImageRessourceStream(svgImage);
+        var img = RadSvgImage.FromStream(stream);
+
+        if (!size.IsEmpty)
+            img.Size = size;
+
+        return img;
+    }
+
+    public virtual RadSvgImage GetSvgImageColored(TSymbols svgImage, SymbolSize size, Color color)
+    {
+        return GetSvgImageColored(svgImage, ResolveCommonSize(size), color);
+    }
+
+    public virtual RadSvgImage GetSvgImageColored(TSymbols svgImage, Size size, Color color)
+    {
+        var img = GetSvgImage(svgImage, size);
+        img.ApplyColor(color);
+        return img;
+    }
+
+    public override Image GetImage(TSymbols svgImage, SymbolSize size)
+    {
+        return GetImage(svgImage, ResolveCommonSize(size));
+    }
+
+    public override Image GetImage(TSymbols svgImage, Size size)
+    {
+        return GetImageFromSvg(GetSvgImage(svgImage, size));
+    }
+
+    public virtual Image GetImageColored(TSymbols svgImage, SymbolSize size, Color color)
+    {
+        return GetImageColored(svgImage, ResolveCommonSize(size), color);
+    }
+
+    public virtual Image GetImageColored(TSymbols svgImage, Size size, Color color)
+    {
+        return GetImageFromSvg(GetSvgImageColored(svgImage, size, color));
+    }
+
+    public virtual Image GetImageFromSvg(RadSvgImage svg)
+    {
+        return svg.ToImage();
+    }
+}