Egon Payment compatibility

* EGON expects the payment amount to be a localized string instead of float
    * adds transformation for this

intervention/utils/egon_export.py

@@ -11,6 +11,7 @@ import json
 import pika
 import xmltodict
 from django.db.models import Sum
+from django.utils import formats
 
 from intervention.settings import EGON_RABBITMQ_HOST, EGON_RABBITMQ_USER, EGON_RABBITMQ_PW, EGON_RABBITMQ_PORT
 from konova.sub_settings.django_settings import DEFAULT_DATE_FORMAT
@@ -92,6 +93,9 @@ class EgonGmlBuilder:
         )["summed"]
         return all_payments
 
+    def _float_to_localized_string(self, value: float):
+        return formats.number_format(value, use_l10n=True, decimal_pos=2)
+
     def _gen_kompensationsArt(self) -> (str, int):
         comp_type = "Ersatzzahlung"
         comp_type_code = 774898901
@@ -191,7 +195,7 @@ class EgonGmlBuilder:
                         "@xlink:href": f"http://register.naturschutz.rlp.de/repository/services/referenzliste/1053/{reg_office.atom_id if reg_office else None}",
                         "#text": reg_office.long_name if reg_office else None
                     },
-                    "oneo:ersatzzahlung": self._sum_all_payments(),
+                    "oneo:ersatzzahlung": self._float_to_localized_string(self._sum_all_payments()),
                     "oneo:kompensationsart": {
                         "@xlink:href": f"http://register.naturschutz.rlp.de/repository/services/referenzliste/88140/{comp_type_code}",
                         "#text": comp_type