Add tasks for all the new languages

Task/Count-the-coins/Sidef/count-the-coins.sidef

@@ -0,0 +1,17 @@
+func cc(_)                { 0 }
+func cc({ .is_neg  }, *_) { 0 }
+func cc({ .is_zero }, *_) { 1 }
+
+func cc(amount, first, *rest) is cached {
+    cc(amount, rest...) + cc(amount - first, first, rest...);
+}
+
+func cc_optimized(amount, *rest) {
+    cc(amount, rest.sort_by{|v| -v }...);
+}
+
+var x = cc_optimized(100, 1, 5, 10, 25);
+say "Ways to change $1 with common coins: #{x}";
+
+var y = cc_optimized(1000 * 100, 1, 5, 10, 25, 50, 100);
+say "Ways to change $1000 with addition of less common coins: #{y}";