[types.inc] Adding file with some struc defs

src/types.inc

@@ -0,0 +1,12 @@
+
+struc db [data] {
+    common
+	. db data
+	.size = $ - .
+}
+
+struc rb [data] {
+    common
+	. rb data
+	.size = $ - .
+}