Add tasks for all the new languages

Task/Sorting-algorithms-Insertion-sort/Sidef/sorting-algorithms-insertion-sort.sidef

@@ -0,0 +1,17 @@
+class Array {
+    method insertion_sort {
+        { |i|
+            var j = i;
+            var k = self[i];
+            while ((j > 0) && (k < self[j - 1])) {
+                self[j] = self[j - 1];
+                j--;
+            };
+            self[j] = k;
+        } * self.end;
+        return self;
+    }
+}
+
+var a = 10.of {100.rand.int};
+say a.insertion_sort;