AnySceneImporter: recognize Magnum's blob files.

src/MagnumPlugins/AnySceneImporter/AnySceneImporter.cpp

@@ -80,6 +80,8 @@ void AnySceneImporter::doOpenFile(const std::string& filename) {
         plugin = "Ac3dImporter";
     else if(Utility::String::endsWith(normalized, ".blend"))
         plugin = "BlenderImporter";
+    else if(Utility::String::endsWith(normalized, ".blob"))
+        plugin = "MagnumImporter";
     else if(Utility::String::endsWith(normalized, ".bvh"))
         plugin = "BvhImporter";
     else if(Utility::String::endsWith(normalized, ".csm"))

src/MagnumPlugins/AnySceneImporter/AnySceneImporter.h

@@ -61,6 +61,8 @@ tries to open the file with it. Supported formats:
 -   AC3D (`*.ac`), loaded with any plugin that provides `Ac3dImporter`
 -   Blender 3D (`*.blend`), loaded with any plugin that provides
     `BlenderImporter`
+-   @ref blob "Magnum's memory-mappable serialization format" (`*.blob`),
+    loaded with @ref MagnumImporter
 -   Biovision BVH (`*.bvh`), loaded with any plugin that provides `BvhImporter`
 -   CharacterStudio Motion (`*.csm`), loaded with any plugin that provides
     `CsmImporter`

src/MagnumPlugins/AnySceneImporter/Test/AnySceneImporterTest.cpp

@@ -75,6 +75,7 @@ constexpr struct {
     const char* plugin;
 } DetectData[]{
     {"Blender", "suzanne.blend", "BlenderImporter"},
+    {"BLOB", "messy.blob", "MagnumImporter"},
     {"COLLADA", "xml.dae", "ColladaImporter"},
     {"FBX", "autodesk.fbx", "FbxImporter"},
     {"glTF", "khronos.gltf", "GltfImporter"},