loader: Add GetName and GetDescription for logs

Handy to have more layer detail for logging.

Change-Id: I6933a8fcb90b9cfb70fc85a358244863aac9d702
(cherry picked from commit cf275f37b4a903b5dcc95b5100db667c906aa33f)
diff --git a/vulkan/libvulkan/layers_extensions.cpp b/vulkan/libvulkan/layers_extensions.cpp
index 287e69b..e77952a 100644
--- a/vulkan/libvulkan/layers_extensions.cpp
+++ b/vulkan/libvulkan/layers_extensions.cpp
@@ -394,6 +394,14 @@
     }
 }
 
+const char* LayerRef::GetName() {
+    return layer_->properties.layerName;
+}
+
+uint32_t LayerRef::GetSpecVersion() {
+    return layer_->properties.specVersion;
+}
+
 LayerRef::LayerRef(LayerRef&& other) : layer_(std::move(other.layer_)) {
     other.layer_ = nullptr;
 }