Add tasks for all the new languages

Task/Sorting-algorithms-Pancake-sort/Sidef/sorting-algorithms-pancake-sort.sidef

@@ -0,0 +1,14 @@
+func pancake(a) {
+    for idx in ^(a.end) {
+        var min = idx
+        for i in (idx+1 .. a.end) { min = i if (a[min] > a[i]) }
+        next if (a[min] == a[idx])
+        a[min..a.end] = [a[min..a.end]].reverse...
+        a[idx..a.end] = [a[idx..a.end]].reverse...
+    }
+    return a
+}
+
+var arr = 10.of{ 100.irand }
+say "Before: #{arr}"
+say "After:  #{pancake(arr)}"