Create an extras directory with files that are not related to the build but that I need to keep around for reference.

PPP3/extras/git_minimal.cpp

@@ -0,0 +1,26 @@
+#include <git2.h>
+#include <iostream>
+#include <iomanip>
+#include <fstream>
+#include <fmt/core.h>
+#include <regex>
+#include <string>
+#include <iterator>
+#include <ctime>
+#include "dbc.h"
+#include <unistd.h>
+#include <stdio.h>
+#include <regex>
+
+int main(int argc, char *argv[])
+{
+  git_repository* repo = nullptr;
+
+  git_libgit2_init();
+
+  int err = git_repository_open(&repo, argv[1]);
+
+  git_libgit2_shutdown();
+
+  git_libgit2_shutdown();
+}