feat: Add member fields to admin

src/fellchensammlung/admin.py

@@ -1,8 +1,26 @@
 from django.contrib import admin
+from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
+from django.contrib.auth.models import User
 
-from django.contrib import admin
+from .models import Animal, Species, RescueOrganization, AdoptionNotice, Location, Rule, Image, ModerationAction, Report, Member
 
-from .models import Animal, Species, RescueOrganization, AdoptionNotice, Location, Rule, Image, ModerationAction, Report
+
+# Define an inline admin descriptor for Employee model
+# which acts a bit like a singleton
+class MemberInline(admin.StackedInline):
+    model = Member
+    can_delete = False
+    verbose_name_plural = "member"
+
+
+# Define a new User admin
+class UserAdmin(BaseUserAdmin):
+    inlines = [MemberInline]
+
+
+# Re-register UserAdmin
+admin.site.unregister(User)
+admin.site.register(User, UserAdmin)
 
 admin.site.register(Animal)
 admin.site.register(Species)