Add Mapping Saml configuration UI

plugins/netbox-rps-plugin/netbox_rps_plugin/api/serializers.py

 from rest_framework import serializers
 from ..models import Mapping, HttpHeader, SamlConfig
 from netbox.api.serializers import NetBoxModelSerializer, WritableNestedSerializer
-from pprint import pp
 
 
 class NestedMappingSerializer(WritableNestedSerializer):