Add tasks for all the new languages

Task/Sorting-algorithms-Selection-sort/Swift/sorting-algorithms-selection-sort.swift

@@ -0,0 +1,19 @@
+func selectionSort(inout arr:[Int]) {
+    var min:Int
+
+    for n in 0..<arr.count {
+        min = n
+
+        for x in n+1..<arr.count {
+            if (arr[x] < arr[min]) {
+                min = x
+            }
+        }
+
+        if min != n {
+            let temp = arr[min]
+            arr[min] = arr[n]
+            arr[n] = temp
+        }
+    }
+}