Add Christchurch Zone model and shapefile ingestion

backend/right_tree/api/migrations/0010_christchurchzone.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.2.8 on 2021-11-30 00:40
+
+import django.contrib.gis.db.models.fields
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0009_alter_plant_options'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ChristchurchZone',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('objectid', models.IntegerField()),
+                ('name', models.CharField(max_length=25)),
+                ('geom', django.contrib.gis.db.models.fields.MultiPolygonField(srid=2193)),
+            ],
+        ),
+    ]