Add tasks for all the new languages

Task/Guess-the-number-With-feedback/Sidef/guess-the-number-with-feedback.sidef

@@ -0,0 +1,10 @@
+var number = rand(1..10);
+say "Guess the number between 1 and 10";
+
+loop {
+    given(var n = Sys.scanln("> ").to_i) {
+        when (number)     { say "You guessed it."; break }
+        case (n < number) { say "Too low" }
+        default           { say "Too high" }
+    }
+}