feat(build): use meson so I don't end up ripping my hair out

include/led.h

@@ -1,2 +1,16 @@
+#pragma once
+
+/**
+ * @brief create the led thread
+ *
+ * @param file file to send blinking signals to
+ * @return 0 on success
+ */
 int led_create_thread(char *file);
+
+/**
+ * @brief set the led rate
+ *
+ * @param r number of blinks per second
+ */
 void led_set_rate(double rate);