#31 API basic implementation

* adds new app to project
* adds relation between User model and new APIUserToken model
* adds first implementation for GET of intervention
* adds basic code layout for future extension by having new versions

api/views/v1/intervention.py

@@ -0,0 +1,40 @@
+"""
+Author: Michel Peltriaux
+Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
+Contact: michel.peltriaux@sgdnord.rlp.de
+Created on: 21.01.22
+
+"""
+import json
+
+from django.http import HttpRequest, JsonResponse
+
+from api.views.v1.general import AbstractModelAPIViewV1
+from intervention.models import Intervention
+
+
+class APIInterventionView(AbstractModelAPIViewV1):
+    model = Intervention
+    fields_to_serialize = {
+        "identifier",
+        "title",
+    }
+
+    def get(self, request: HttpRequest, identifier):
+        data = self.fetch_and_serialize("identifier", identifier)
+        return JsonResponse(data)
+
+    def model_to_json(self, entry: Intervention):
+        entry_json = {
+            "identifier": entry.identifier,
+            "title": entry.title,
+            "responsible": self.responsible_to_json(entry.responsible),
+            "legal": self.legal_to_json(entry.legal),
+            "compensations": list(entry.compensations.all().values_list("pk", flat=True)),
+            "payments": self.payments_to_json(entry.payments.all()),
+            "deductions": self.deductions_to_json(entry.deductions.all()),
+        }
+        geom = entry.geometry.geom.geojson
+        geo_json = json.loads(geom)
+        geo_json["properties"] = entry_json
+        return geo_json