[ENG-8515] - Add management command to manual archive (CenterForOpenScience#11361)

* Add management command to manual archive

* fix test

* Fix lints

* Fix tests

Author: Vlad0n20

admin/nodes/views.py

@@ -1,11 +1,8 @@
 from datetime import datetime
 from enum import Enum
 
-from django.utils import timezone
-from django.core.exceptions import PermissionDenied, ValidationError
-from django.urls import NoReverseMatch
+import pytz
 from django.db import transaction
-from django.db.models import F, Case, When, IntegerField
 from django.contrib import messages
 from django.contrib.auth.mixins import PermissionRequiredMixin
 from django.core.exceptions import PermissionDenied, ValidationError