Added Stonehammer's Placeables

Added Stonehammer's Placeables for future work on Zelkor's Ferry.

_content/ratdog_content/sh_forest01.pwk

@@ -0,0 +1,19 @@
+# Exported from NWmax 0.8 b54 at 12/3/2019 6:26:00 PM
+# pwk file
+#
+#NWmax PWKMESH  ASCII
+node trimesh Unwalkable_part
+  parent sh_plc_pwk
+  position 0.0 0.0 0.0
+  orientation 1.0 0.0 0.0 0.0
+  wirecolor 0.337255 0.337255 0.337255 
+  bitmap NULL
+  verts 4
+    -4.62963 -4.30482 0.0
+    4.62963 -4.30482 0.0
+    -4.62963 4.30482 0.0
+    4.62963 4.30482 0.0
+  faces 2
+    2 0 3  1  0 0 0  7
+    1 3 0  1  0 0 0  7
+endnode