Add Baklava in Fennel (#4192)

Author: rzuckerm

archive/f/fennel/baklava.fnl

@@ -0,0 +1,8 @@
+(for [i -10 10]
+  (let [
+    num-spaces (math.abs i)
+    num-stars (- 21 (* 2 num-spaces))
+  ]
+    (print (.. (string.rep " " num-spaces) (string.rep "*" num-stars)))
+  )
+)