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## listpushback
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### Instructions
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Écrire une fonction `ListPushBack` qui insère un nouvel élément `NodeL` au début de la liste `l` en utilisant la structure `List`.
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### Fonction et structue attendues
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```go
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type NodeL struct {
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Data interface{}
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Next *NodeL
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}
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type List struct {
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Head *NodeL
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Tail *NodeL
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}
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func ListPushFront(l *List, data interface{}) {
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}
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```
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### Utilisation
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Voici un éventuel [programme](TODO-LINK) pour tester votre fonction :
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```go
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package main
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import (
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piscine ".."
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"fmt"
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)
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func main() {
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link := &piscine.List{}
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piscine.ListPushFront(link, "Hello")
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piscine.ListPushFront(link, "man")
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piscine.ListPushFront(link, "how are you")
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it := link.Head
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for it != nil {
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fmt.Println(it.Data)
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it = it.Next
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}
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}
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```
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Et son résultat :
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```console
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student@ubuntu:~/piscine-go/test$ go build
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student@ubuntu:~/piscine-go/test$ ./test
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how are you
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man
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Hello
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student@ubuntu:~/piscine-go/test$
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```
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