add attachment managment and rewrite migrations

services/backend/apps/achievement/migrations/0001_initial.py

@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-02 12:09
+# Generated by Django 5.1.6 on 2025-03-02 21:24
 
 import apps.achievement.models
 import uuid
@@ -19,7 +19,8 @@ class Migration(migrations.Migration):
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
                 ('name', models.CharField(max_length=30, unique=True, verbose_name='название')),
                 ('description', models.TextField(verbose_name='описание')),
-                ('icon', models.FileField(upload_to=apps.achievement.models.Achievement.image_url_upload_to, verbose_name='иконка достижения')),
+                ('icon', models.ImageField(upload_to=apps.achievement.models.Achievement.image_url_upload_to, verbose_name='иконка достижения')),
+                ('slug', models.SlugField(unique=True, verbose_name='слаг')),
             ],
             options={
                 'verbose_name': 'ачивка',