Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/items/flasche.c b/items/flasche.c
new file mode 100644
index 0000000..76026c9
--- /dev/null
+++ b/items/flasche.c
@@ -0,0 +1,3 @@
+#pragma strong_types,rtt_checks
+inherit "/std/items/flasche";
+