Add import of Audioscrobbler files

Here we add a model for holding Audioscrobbler imports and some code to
process the tab-separated files we get from Rockbox.

vrobbler/apps/scrobbles/migrations/0012_audioscrobblertsvimport.py

@@ -0,0 +1,52 @@
+# Generated by Django 4.1.5 on 2023-02-03 19:50
+
+from django.db import migrations, models
+import django_extensions.db.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('scrobbles', '0011_chartrecord_user'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AudioScrobblerTSVImport',
+            fields=[
+                (
+                    'id',
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name='ID',
+                    ),
+                ),
+                (
+                    'created',
+                    django_extensions.db.fields.CreationDateTimeField(
+                        auto_now_add=True, verbose_name='created'
+                    ),
+                ),
+                (
+                    'modified',
+                    django_extensions.db.fields.ModificationDateTimeField(
+                        auto_now=True, verbose_name='modified'
+                    ),
+                ),
+                (
+                    'tsv_file',
+                    models.FileField(
+                        blank=True,
+                        null=True,
+                        upload_to='audioscrobbler-uploads/%Y/%m-%d/',
+                    ),
+                ),
+            ],
+            options={
+                'get_latest_by': 'modified',
+                'abstract': False,
+            },
+        ),
+    ]

vrobbler/apps/scrobbles/migrations/0013_audioscrobblertsvimport_processed_on.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.5 on 2023-02-03 20:20
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('scrobbles', '0012_audioscrobblertsvimport'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='audioscrobblertsvimport',
+            name='processed_on',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+    ]