fix: rework geocoding api usage, make api url custom

src/fellchensammlung/migrations/0008_remove_location_osm_id.py

@@ -0,0 +1,20 @@
+# Generated by Django 5.0.6 on 2024-06-05 19:52
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        (
+            "fellchensammlung",
+            "0007_remove_location_country_remove_location_description_and_more",
+        ),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="location",
+            name="osm_id",
+        ),
+    ]