Added Stonehammer's Placeables

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

_content/ratdog_content/housermb1.pwk

@@ -0,0 +1,19 @@
+# Exported from Wayland's NWN Maxscript v0.3b at 8/4/2008 4:59:38 PM
+# mdl file
+#
+node trimesh plane01
+    parent housermb1_pwk
+    diffuse 0.8000 0.8000 0.8000
+    ambient 0.2000 0.2000 0.2000
+    specular 0.0000 0.0000 0.0000
+    render 0
+    bitmap NULL
+    verts 4
+        2.18264 3.44441 0.0
+        -2.11624 3.44441 0.0
+        -3.43661 -3.28026 0.0
+        3.48254 -3.28026 0.0
+    faces 2
+        1 2 3 0 0 0 0 1
+        1 3 0 0 0 0 0 1
+endnode