Move ShpD2 and TmpRA/TD loaders to Mods.Cnc

Reducing the count of proprietary formats in Mods.Common.

Note: Moving ShpD2 to Mods.Cnc is intentional. RA/TD
use it for their original mouse shp files, and any D2(k) mod
will normally need Mods.Cnc anyway, while we can avoid
adding a Mods.D2k dependency to RA/TD this way.

OpenRA.Mods.Cnc/SpriteLoaders/ShpD2Loader.cs

@@ -15,7 +15,7 @@ using OpenRA.Graphics;
 using OpenRA.Mods.Common.FileFormats;
 using OpenRA.Primitives;
 
-namespace OpenRA.Mods.Common.SpriteLoaders
+namespace OpenRA.Mods.Cnc.SpriteLoaders
 {
 	public class ShpD2Loader : ISpriteLoader
 	{

OpenRA.Mods.Cnc/SpriteLoaders/TmpRALoader.cs

@@ -13,7 +13,7 @@ using System.IO;
 using OpenRA.Graphics;
 using OpenRA.Primitives;
 
-namespace OpenRA.Mods.Common.SpriteLoaders
+namespace OpenRA.Mods.Cnc.SpriteLoaders
 {
 	public class TmpRALoader : ISpriteLoader
 	{

OpenRA.Mods.Cnc/SpriteLoaders/TmpTDLoader.cs

@@ -13,7 +13,7 @@ using System.IO;
 using OpenRA.Graphics;
 using OpenRA.Primitives;
 
-namespace OpenRA.Mods.Common.SpriteLoaders
+namespace OpenRA.Mods.Cnc.SpriteLoaders
 {
 	public class TmpTDLoader : ISpriteLoader
 	{