ui: improved file nodes

* added colors for file nodes and dependency edges
* use TokenComponentFilePath on file nodes to store FilePath

src/lib/data/graph/token_component/TokenComponentFilePath.cpp

@@ -0,0 +1,20 @@
+#include "data/graph/token_component/TokenComponentFilePath.h"
+
+TokenComponentFilePath::TokenComponentFilePath(const FilePath& path)
+	: m_path(path)
+{
+}
+
+TokenComponentFilePath::~TokenComponentFilePath()
+{
+}
+
+std::shared_ptr<TokenComponent> TokenComponentFilePath::copy() const
+{
+	return std::make_shared<TokenComponentFilePath>(*this);
+}
+
+const FilePath& TokenComponentFilePath::getFilePath() const
+{
+	return m_path;
+}