Added patch to replace anime in user lists

patches/animelist-replace-anime/animelist-replace-anime.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/animenotifier/notify.moe/arn"
+)
+
+func main() {
+	defer arn.Node.Close()
+
+	oldID := os.Args[1]
+	newID := os.Args[2]
+
+	if oldID == "" || newID == "" {
+		fmt.Println("Parameters: [old ID] [new ID]")
+		os.Exit(1)
+	}
+
+	for animeList := range arn.StreamAnimeLists() {
+		item := animeList.Find(oldID)
+
+		if item == nil {
+			continue
+		}
+
+		item.AnimeID = newID
+		animeList.Save()
+	}
+}