97 custom arguments broken (#99)

* golang debug

* handle template in playlist download

* code refactoring, dropped goccy go json

server/handlers/login.go

@@ -1,11 +1,11 @@
 package handlers
 
 import (
+	"encoding/json"
 	"net/http"
 	"os"
 	"time"
 
-	"github.com/goccy/go-json"
 	"github.com/golang-jwt/jwt/v5"
 	"github.com/marcopeocchi/yt-dlp-web-ui/server/config"
 	"github.com/marcopeocchi/yt-dlp-web-ui/server/utils"