Split off command-line options parsing from the main function

commandline.h

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#pragma once
+
+#include "macros.h"
+#include "types.h"
+#include "logic.h"
+
+extern int parseArgs(
+	int argc,
+	char *argv[],
+	board_t *board,
+	wins_t **wins,
+	FILE **outputfile,
+	char **filename,
+	bool *randomMoves
+);