Rename argparse.* to options.*

Seems to be a more appropriate name.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>

src/options.h

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) Yuxuan Shui <yshuiv7@gmail.com>
+#pragma once
+
+#include <stdbool.h>
+
+#include "compiler.h"
+
+typedef struct session session_t;
+
+/// Get config options that are needed to parse the rest of the options
+/// Return true if we should quit
+bool get_early_config(int argc, char *const *argv, char **config_file, bool *all_xerrors,
+                      int *exit_code);
+
+/**
+ * Process arguments and configuration files.
+ */
+void get_cfg(session_t *ps, int argc, char *const *argv);