Add incomplete benchmark files

benchmark/decremental_bench.cc

@@ -0,0 +1,20 @@
+#include <src/include/nanobench.h>
+#include <doctest/doctest.h>
+
+#include "algorithm/decremental_scc.h"
+#include "algorithm/italiano.h"
+#include "algorithm/frigioni.h"
+
+#include <fstream>
+
+using namespace graph;
+
+TEST_SUITE("Decremental algorithms") {
+  
+  TEST_CASE("Decremental maintenance of SCCs 1") {
+    std::ifstream infile("resources/data.txt");
+    std::uint16_t u, v;
+
+    //while (infile >> u >> v) {}
+  }
+}