feat(api): split api into multiple apps (#1626)

Fixes #1622

- split the api into 4 apps: core, history, schedule, storage
- exploded the settings into testing/prod

api/libretime_api/schedule/views/webstream.py

@@ -0,0 +1,16 @@
+from rest_framework import viewsets
+
+from ..models import Webstream, WebstreamMetadata
+from ..serializers import WebstreamMetadataSerializer, WebstreamSerializer
+
+
+class WebstreamViewSet(viewsets.ModelViewSet):
+    queryset = Webstream.objects.all()
+    serializer_class = WebstreamSerializer
+    model_permission_name = "webstream"
+
+
+class WebstreamMetadataViewSet(viewsets.ModelViewSet):
+    queryset = WebstreamMetadata.objects.all()
+    serializer_class = WebstreamMetadataSerializer
+    model_permission_name = "webstreametadata"