Add tasks for all the new languages

Task/Factorial/FutureBasic/factorial.futurebasic

@@ -0,0 +1,33 @@
+include "ConsoleWindow"
+
+local fn factorialIterative( n as long ) as double
+dim as double f
+dim as long i
+
+if ( n > 1 )
+  f = 1
+  for i = 2 To n
+    f = f * i
+  next i
+else
+  f = 1
+end if
+end fn = f
+
+local fn factorialRecursive( n as long ) as double
+dim as double f
+
+if ( n < 2 )
+ f = 1
+else
+ f = n * fn factorialRecursive( n -1 )
+end if
+end fn = f
+
+dim as long i
+
+for i = 0 to 12
+  print "Iterative:"; using "####"; i; " ="; fn factorialIterative( i )
+  print "Recursive:"; using "####"; i; " ="; fn factorialRecursive( i )
+  print
+next i