Add Baklava in Gosu (#4174)

Author: rzuckerm

archive/g/gosu/baklava.gsp

@@ -0,0 +1,5 @@
+for ( n in -10..10) {
+  var numSpaces = Math.abs(n)
+  var numStars = 21 - 2 * numSpaces
+  print(" ".repeat(numSpaces) + "*".repeat(numStars))
+}