Add tasks for all the new languages

Task/Anonymous-recursion/Swift/anonymous-recursion-1.swift

@@ -0,0 +1,9 @@
+let fib: Int -> Int = {
+  func f(n: Int) -> Int {
+    assert(n >= 0, "fib: no negative numbers")
+    return n < 2 ? 1 : f(n-1) + f(n-2)
+  }
+  return f
+}()
+
+print(fib(8))