AnyImageImporter: support DDS files.

src/MagnumPlugins/AnyImageImporter/AnyImageImporter.cpp

@@ -54,6 +54,8 @@ void AnyImageImporter::doOpenFile(const std::string& filename) {
     std::string plugin;
     if(Utility::String::endsWith(filename, ".bmp"))
         plugin = "BmpImporter";
+    if(Utility::String::endsWith(filename, ".dds"))
+        plugin = "DdsImporter";
     else if(Utility::String::endsWith(filename, ".gif"))
         plugin = "GifImporter";
     else if(Utility::String::endsWith(filename, ".hdr"))

src/MagnumPlugins/AnyImageImporter/AnyImageImporter.h

@@ -55,6 +55,8 @@ Detects file type based on file extension, loads corresponding plugin and then
 tries to open the file with it. Supported formats:
 
 -   BMP (`*.bmp`), loaded with any plugin that provides `BmpImporter`
+-   DDS (`*.dds`), loaded with @ref DdsImporter or any other plugin that
+    provides it
 -   GIF (`*.gif`), loaded with any plugin that provides `GifImporter`
 -   HDR (`*.hdr`), loaded with any plugin that provides `HdrImporter`
 -   JPEG (`*.jpg`, `*.jpeg`), loaded with @ref JpegImporter or any other plugin