feat: implement custom user model with JWT authentication and registration endpoints

backend/users/serializers.py

@@ -0,0 +1,20 @@
+from django.contrib.auth import get_user_model
+from rest_framework import serializers
+
+User = get_user_model()
+
+
+class UserSerializer(serializers.ModelSerializer):
+    password = serializers.CharField(write_only=True)
+
+    class Meta:
+        model = User
+        fields = ("id", "email", "full_name", "password")
+
+    def create(self, validated_data):
+        user = User.objects.create_user(
+            email=validated_data["email"],
+            password=validated_data["password"],
+            full_name=validated_data.get("full_name", ""),
+        )
+        return user