Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/items/kraeuter/trank.c b/items/kraeuter/trank.c
new file mode 100644
index 0000000..757b42f
--- /dev/null
+++ b/items/kraeuter/trank.c
@@ -0,0 +1,13 @@
+#pragma strong_types,rtt_checks
+
+#include <items/kraeuter/kraeuter.h>
+
+inherit STDTRANK;
+/*
+void create()
+{
+  ::create();
+  replace_program();
+}
+*/
+