Libraries: Create top level directory for libraries.

Things were getting a little crowded in the project root, so this patch
moves the Lib*/ directories into Libraries/.

Libraries/LibHTML/CSS/StyledNode.cpp

@@ -0,0 +1,25 @@
+#include <LibHTML/CSS/StyledNode.h>
+
+StyledNode::StyledNode(const Node* node)
+    : m_node(node)
+{
+}
+
+StyledNode::~StyledNode()
+{
+}
+
+Display StyledNode::display() const
+{
+    auto it = m_property_values.find("display");
+    if (it == m_property_values.end())
+        return Display::Inline;
+    auto value = it->value->to_string();
+    if (value == "none")
+        return Display::None;
+    if (value == "block")
+        return Display::Block;
+    if (value == "inline")
+        return Display::Inline;
+    ASSERT_NOT_REACHED();
+}