Add tasks for all the new languages

Task/Hamming-numbers/Sidef/hamming-numbers.sidef

@@ -0,0 +1,21 @@
+func ham_gen {
+    var s = [[1], [1], [1]];
+    var m = [2, 3, 5];
+
+    func {
+        var n = [s[0][0], s[1][0], s[2][0]].min;
+        for i in (0..2) {
+            s[i].shift if (s[i][0] == n);
+            s[i].append(n * m[i]);
+        }
+        return n
+    }
+}
+
+var h = ham_gen();
+
+var i = 20;
+say i.of { h() }.join(' ');
+
+range(i+1, 1691-1).each { h() }
+say h();