Add tasks for all the new languages

Task/Factorial/Lingo/factorial-1.lingo

@@ -0,0 +1,4 @@
+on fact (n)
+  if n<=1 then return 1
+  return n * fact(n-1)
+end

Task/Factorial/Lingo/factorial-2.lingo

@@ -0,0 +1,7 @@
+on fact (n)
+  res = 1
+  repeat with i = 2 to n
+    res = res*i
+  end repeat
+  return res
+end