Initial commit

First and incomplete version of the refactor, stage module works, including aborting moves.

src/main.h

@@ -0,0 +1,27 @@
+#ifndef MAIN_H
+#include "config.h"
+#include <Arduino.h>
+#ifdef DEBUG_ON
+#define D(x) Serial.println(x)
+#else
+#define D(x)
+#endif
+
+#define END_COMMAND \
+    {               \
+        "", NULL    \
+    }
+#define CHECK_END_COMMAND(C) C.command.length() > 0
+
+struct Command
+{
+    String command;
+    void (*run)(String);
+};
+
+uint8_t parse_arguments(String[], String, uint8_t);
+extern void register_module(const Command commands[], void (*loop_fn)(void));
+
+void get_version(String);
+#define MAIN_H
+#endif