Added Zwerkules Rural override tileset

Added Zwerkules Rural override tileset.

_content/biorural/ttr01_n11_01.wok

@@ -0,0 +1,67 @@
+# Rewritten by CleanModels 3 Version 3.5.1 Mon Jul 08 17:34:08 2019
+#MAXWALKMESH  ASCII
+beginwalkmeshgeom ttr01_n11_01
+node aabb wok
+  parent ttr01_n11_01
+  orientation 0 0 0 0
+  position 0 0 0
+  wirecolor 1 1 1
+  bitmap NULL
+  render 0
+  shadow 0
+  verts 11
+    -1 -1 0
+    -1 1 0
+    -3.45 -3.45 0
+    -5 5 0
+    -3.69 5 0
+    5 -3.68 0
+    1 -1 0
+    5 -5 0
+    5 5 0
+    1 1 0
+    -5 -5 0
+  faces 14
+    0 1 2 1 0 0 0 3
+    3 2 4 1 0 0 0 3
+    2 5 0 1 0 0 0 3
+    0 5 6 1 0 0 0 3
+    7 5 2 1 0 0 0 3
+    6 8 9 1 0 0 0 3
+    8 4 9 1 0 0 0 3
+    2 1 4 1 0 0 0 3
+    4 1 9 1 0 0 0 3
+    5 8 6 1 0 0 0 3
+    10 7 2 1 0 0 0 3
+    3 10 2 1 0 0 0 3
+    0 6 1 1 0 0 0 7
+    1 6 9 1 0 0 0 7
+  aabb     -5 -5 0 5 5 0 -1
+    -5 -5 0 5 5 0 -1
+    -5 -5 0 -1 5 0 -1
+    -5 -5 0 -3.45 5 0 11
+    -5 -3.45 0 -1 5 0 -1
+    -3.69 -3.45 0 -1 5 0 7
+    -5 -3.45 0 -3.45 5 0 1
+    -5 -5 0 5 5 0 -1
+    -5 -5 0 5 5 0 -1
+    -3.45 -3.45 0 -1 1 0 0
+    -5 -5 0 5 5 0 -1
+    -3.69 1 0 1 5 0 8
+    -5 -5 0 5 -3.45 0 10
+    -1 -1 0 1 1 0 12
+    -3.69 -5 0 5 5 0 -1
+    -3.45 -5 0 5 -1 0 -1
+    -3.45 -3.68 0 5 -1 0 2
+    -3.45 -5 0 5 -1 0 -1
+    -1 -3.68 0 5 -1 0 3
+    -3.45 -5 0 5 -3.45 0 4
+    -3.69 -3.68 0 5 5 0 -1
+    -3.69 -1 0 5 5 0 -1
+    -1 -1 0 1 1 0 13
+    -3.69 1 0 5 5 0 6
+    1 -3.68 0 5 5 0 -1
+    1 -3.68 0 5 5 0 9
+    1 -1 0 5 5 0 5
+endnode
+endwalkmeshgeom ttr01_n11_01