data: parsing file dependencies

This change adds the node NODE_FILE to the graph and the edge EDGE_INCLUDE, which determine the dependencies between
files by parsing the include preprocessor directive. File nodes can be searched and displayed in the GraphView as file
dependency graph. The filter "file" allows for selecting all files. The file depency information is used on project
refresh do determine which files need to get reparsed.

src/lib/data/graph/Node.cpp

@@ -2,12 +2,14 @@
 
 #include <sstream>
 
+#include "utility/file/FileSystem.h"
+#include "utility/logging/logging.h"
+
 #include "data/graph/token_component/TokenComponentAbstraction.h"
 #include "data/graph/token_component/TokenComponentConst.h"
 #include "data/graph/token_component/TokenComponentName.h"
 #include "data/graph/token_component/TokenComponentStatic.h"
 #include "data/graph/token_component/TokenComponentSignature.h"
-#include "utility/logging/logging.h"
 
 Node::Node(NodeType type, std::shared_ptr<TokenComponentName> nameComponent)
 	: m_type(type)
@@ -50,7 +52,14 @@ bool Node::isType(NodeTypeMask mask) const
 
 std::string Node::getName() const
 {
-	return m_nameComponent->getName();
+	if (isType(NODE_FILE))
+	{
+		return FileSystem::fileName(m_nameComponent->getName());
+	}
+	else
+	{
+		return m_nameComponent->getName();
+	}
 }
 
 std::string Node::getFullName() const
@@ -342,6 +351,8 @@ std::string Node::getTypeString(NodeType type) const
 		return "typedef";
 	case NODE_TEMPLATE_PARAMETER_TYPE:
 		return "template parameter type";
+	case NODE_FILE:
+		return "file";
 	}
 	return "";
 }