Add tasks for all the new languages

Task/Variadic-function/Lasso/variadic-function-1.lasso

@@ -0,0 +1,5 @@
+define printArgs(...items) => stdoutnl(#items)
+define printEachArg(...) => with i in #rest do stdoutnl(#i)
+
+printArgs('a', 2, (:3))
+printEachArg('a', 2, (:3))

Task/Variadic-function/Lasso/variadic-function-2.lasso

@@ -0,0 +1,2 @@
+local(args = (:"Rosetta", "Code", "Is", "Awesome!"))
+printEachArg(:#args)

Task/Variadic-function/Lasso/variadic-function-3.lasso

@@ -0,0 +1,8 @@
+staticarray(a, 2, staticarray(3))
+a
+2
+staticarray(3)
+Rosetta
+Code
+Is
+Awesome!