feat(api): add auth permission to all api endpoint

app/apps/api/serializers/dca.py

@@ -1,4 +1,6 @@
 from rest_framework import serializers
+from rest_framework.permissions import IsAuthenticated
+
 from apps.dca.models import DCAEntry, DCAStrategy
 
 
@@ -16,6 +18,8 @@ class DCAEntrySerializer(serializers.ModelSerializer):
         max_digits=42, decimal_places=30, read_only=True
     )
 
+    permission_classes = [IsAuthenticated]
+
     class Meta:
         model = DCAEntry
         fields = [
@@ -57,6 +61,8 @@ class DCAStrategySerializer(serializers.ModelSerializer):
         max_digits=42, decimal_places=30, read_only=True
     )
 
+    permission_classes = [IsAuthenticated]
+
     class Meta:
         model = DCAStrategy
         fields = [