Implement exclude flags on CH using shared core

The core is fully contracted for each exclude flag
and stored in a merged graph data structure.

unit_tests/partition/dinic.cpp

@@ -1,6 +1,6 @@
+#include "partition/bisection_graph_view.hpp"
 #include "partition/dinic_max_flow.hpp"
 #include "partition/graph_generator.hpp"
-#include "partition/bisection_graph_view.hpp"
 #include "partition/recursive_bisection_state.hpp"
 
 #include <algorithm>

unit_tests/partition/scc_integration.cpp

@@ -1,5 +1,5 @@
-#include "partition/graph_generator.hpp"
 #include "partition/bisection_graph_view.hpp"
+#include "partition/graph_generator.hpp"
 #include "partition/recursive_bisection_state.hpp"
 
 #include <algorithm>