Resolve "[AdditionalField] Allow setting `required` and `help_text`"

Closes #660 (closed)

aleksis/core/migrations/0036_additionalfields_helptext_required.py

+# Generated by Django 3.2.12 on 2022-02-18 21:48
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0035_preference_model_unique'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='additionalfield',
+            name='help_text',
+            field=models.TextField(blank=True, verbose_name='Help text / description'),
+        ),
+        migrations.AddField(
+            model_name='additionalfield',
+            name='required',
+            field=models.BooleanField(default=False, verbose_name='Required'),
+        ),
+    ]