add hemtt support, major refactor

- no longer supports server events
- can now more easily build using hemtt
- extension vastly improved in both structure and functionality
- tested on listen server
- includes schema change

addons/main/script_version.hpp

@@ -0,0 +1,8 @@
+#define MAJOR 0
+#define MINOR 2
+#define PATCH 0
+#define BUILD 20230919
+
+#define VERSION 0.2
+#define VERSION_STR MAJOR##.##MINOR##.##PATCH##.##BUILD
+#define VERSION_AR MAJOR,MINOR,PATCH,BUILD