Implement puzzle generation

main.c

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#include "puzz.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+int main(void)
+{
+	struct timeval tv;
+	if (gettimeofday(&tv, NULL) != 0) {
+		perror("Failed to get time");
+		exit(1);
+	}
+	srand(tv.tv_usec);
+
+	gen();
+	print();
+
+	return 0;
+}