feat(clients): add clients app basic structure and endpoints

apps/clients/api/serializers.py

@@ -0,0 +1,34 @@
+from rest_framework import serializers
+from apps.clients.models import Client
+from core.serializers.base import BaseModelSerializer
+
+
+class ClientSerializer(BaseModelSerializer):
+    """
+    Serializer for retrieving and representing client details.
+    """
+    class Meta:
+        model = Client
+        fields = BaseModelSerializer.Meta.fields + (
+            "workspace",
+            "name",
+            "notes",
+        )
+        read_only_fields = fields
+
+
+class ClientCreateSerializer(serializers.Serializer):
+    """
+    Serializer for handling input data during client creation.
+    """
+    workspace_id = serializers.UUIDField()
+    name = serializers.CharField(max_length=255)
+    notes = serializers.CharField(allow_blank=True, required=False, default="")
+
+
+class ClientUpdateSerializer(serializers.Serializer):
+    """
+    Serializer for handling input data during client updates.
+    """
+    name = serializers.CharField(max_length=255, required=False)
+    notes = serializers.CharField(allow_blank=True, required=False)