Adding steam publishing

build/build_dependencies/steam/depot_build_2739611.vdf

@@ -0,0 +1,18 @@
+"DepotBuild"
+{
+    "DepotID" "2739611"
+
+    "FileMapping"
+    {
+   	 // This can be a full path, or a path relative to ContentRoot
+   	 "LocalPath" "windows\*"
+
+   	 // This is a path relative to the install folder of your game
+   	 "DepotPath" "."
+   	 
+   	 // If LocalPath contains wildcards, setting this means that all
+   	 // matching files within subdirectories of LocalPath will also
+   	 // be included.
+   	 "Recursive" "1"
+  }
+}