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/DOM/Text.cpp

@@ -0,0 +1,12 @@
+#include <LibHTML/DOM/Text.h>
+#include <LibHTML/Layout/LayoutText.h>
+
+Text::Text(const String& data)
+    : Node(NodeType::TEXT_NODE)
+    , m_data(data)
+{
+}
+
+Text::~Text()
+{
+}