Chore: Cleanup command arguments and standardize process count handling (#4541)

Cleans up some command help text and adds more control over process count for command with a Pool

src/documents/management/commands/document_renamer.py

@@ -4,30 +4,22 @@ import tqdm
 from django.core.management.base import BaseCommand
 from django.db.models.signals import post_save
 
+from documents.management.commands.mixins import ProgressBarMixin
 from documents.models import Document
 
 
-class Command(BaseCommand):
-    help = """
-        This will rename all documents to match the latest filename format.
-    """.replace(
-        "    ",
-        "",
-    )
+class Command(ProgressBarMixin, BaseCommand):
+    help = "This will rename all documents to match the latest filename format."
 
     def add_arguments(self, parser):
-        parser.add_argument(
-            "--no-progress-bar",
-            default=False,
-            action="store_true",
-            help="If set, the progress bar will not be shown",
-        )
+        self.add_argument_progress_bar_mixin(parser)
 
     def handle(self, *args, **options):
+        self.handle_progress_bar_mixin(**options)
         logging.getLogger().handlers[0].level = logging.ERROR
 
         for document in tqdm.tqdm(
             Document.objects.all(),
-            disable=options["no_progress_bar"],
+            disable=self.no_progress_bar,
         ):
             post_save.send(Document, instance=document)