feat: add m3u file source permission

Closes #228

program/migrations/0090_alter_playlist_options.py

+# Generated by Django 4.2.11 on 2024-05-07 14:15
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("program", "0089_rename_playout_channels_radiosettings_line_in_channels"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="playlist",
+            options={
+                "permissions": [
+                    ("add__file", "Can add file media-source"),
+                    ("add__import", "Can add import media-source"),
+                    ("add__line", "Can add line media-source"),
+                    ("add__m3ufile", "Can add m3u media-source"),
+                    ("add__stream", "Can add stream media-source"),
+                ]
+            },
+        ),
+    ]

program/models.py

@@ -535,6 +535,7 @@ class Playlist(models.Model):
             ("add__file", "Can add file media-source"),
             ("add__import", "Can add import media-source"),
             ("add__line", "Can add line media-source"),
+            ("add__m3ufile", "Can add m3u media-source"),
             ("add__stream", "Can add stream media-source"),
         ]