refactor: Handle optional experimental code better

> introduce `hooks::devel` to aggregate debug specific code
> fix support for IIDX31 (target LDJ-010 instead)

hooks/develhook.h

@@ -0,0 +1,19 @@
+#pragma once
+#include <cstdint>
+
+
+namespace hooks::devel
+{
+//_INFO: order matters, low level routines first (if you want them active during later routines)
+enum devel_routine : uint32_t
+{
+    avs_fs_detour = 0,
+    sndb_test,
+    devel_routine_last
+};
+typedef uint32_t devel_routine_t;
+
+bool active_routine(devel_routine_t val);
+void bind_routine(devel_routine_t val, void (*cb)());
+void entry_main();
+}