Added Zwerkules Rural override tileset

Added Zwerkules Rural override tileset.

_content/biorural/ttr01_d13_01.wok

@@ -0,0 +1,80 @@
+# Rewritten by CleanModels 3 Version 3.5.1 Sun Jul 07 18:59:51 2019
+#MAXWALKMESH  ASCII
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