feat(people): Add job title and role

See #1

people/migrations/0013_person_role.py

@@ -0,0 +1,26 @@
+# Generated by Django 2.2.10 on 2020-02-25 09:10
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('people', '0012_person_job_title'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Role',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='person',
+            name='role',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='holders', to='people.Role'),
+        ),
+    ]