Add YoutubeCredentials model and implement YouTube OAuth login functionality

game/models.py

@@ -3,6 +3,11 @@ from django.db import models
 from django.urls import reverse
 
 
+class YoutubeCredentials(models.Model):
+    user = models.OneToOneField(User, on_delete=models.CASCADE)
+    credentials = models.JSONField()
+
+
 class Group(models.Model):
     name = models.CharField(verbose_name="Nom du groupe")
     owner = models.ForeignKey(