Add support for channels in godash.Reduce

API

```go
input := make(chan int)
var output int

go func() {
    for i := 0; i <= 5; i++ {
        input <- i				
    }
    close(input)
}()

godash.Reduce(input, &output, func(sum , element int) int {
  return sum + element
})

fmt.Println(output)

// Output: 15
```
