setup vite and integrate fully with django

- vite starts with `python manage.py runserver`
- add templatetags to simply load vite hmr and entry points
- add eslint (recheck rules)
- enable non-strict ts

src/pretix/settings.py

@@ -863,3 +863,9 @@ FILE_UPLOAD_MAX_SIZE_EMAIL_AUTO_ATTACHMENT = 1024 * 1024 * config.getint("pretix
 FILE_UPLOAD_MAX_SIZE_OTHER = 1024 * 1024 * config.getint("pretix_file_upload", "max_size_other", fallback=10)
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+
+VITE_DEV_SERVER_PORT = 5173
+VITE_DEV_SERVER = f"http://localhost:{VITE_DEV_SERVER_PORT}"
+VITE_DEV_MODE = DEBUG
+VITE_IGNORE = False  # Used to ignore `collectstatic`/`rebuild`