Add member models in API

apps/api/urls.py

 # -*- mode: python; coding: utf-8 -*-
-# Copyright (C) 2018-2019 by BDE ENS Paris-Saclay
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from django.conf.urls import url, include

apps/member/serializers.py

+# -*- mode: python; coding: utf-8 -*-
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 from .models import Profile, Club, Role, Membership
 from rest_framework import serializers, viewsets