Create system_utils component

Somewhat of a 'misc' component; handles early initialization, checking
for first boot and rebooting.

components/system_utils/system_utils.h

@@ -0,0 +1,27 @@
+/*
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Copyright (c) Camden Dixie O'Brien
+ */
+
+#ifndef SYSTEM_UTILS_H
+#define SYSTEM_UTILS_H
+
+#include <stdbool.h>
+
+/**
+ * Perform system initialization that must occur before any other
+ * components are initialized.
+ */
+void early_init(void);
+
+/**
+ * Return whether or not this is the first boot of the system.
+ */
+bool is_first_boot(void);
+
+/**
+ * Reboot the system, storing the current time beforehand.
+ */
+void reboot(void);
+
+#endif