Add repository seeder

src/Tribufu.Database/Repositories/IRepository.cs

@@ -6,7 +6,12 @@ using System.Threading.Tasks;
 
 namespace Tribufu.Database.Repositories
 {
-    public interface IRepository<T, K> where T : class
+    public interface IRepository
+    {
+        void SeedDefaults();
+    }
+
+    public interface IRepository<T, K> : IRepository where T : class
     {
         IList<T> GetAll();
 

src/Tribufu.Database/Repositories/Repository.cs

@@ -21,6 +21,10 @@ namespace Tribufu.Database.Repositories
             _dbSet = context.Set<T>();
         }
 
+        public virtual void SeedDefaults()
+        {
+        }
+
         public virtual IList<T> GetAll()
         {
             return [.. _dbSet];

src/Tribufu.Database/Repositories/RepositorySeeder.cs

@@ -0,0 +1,25 @@
+// Copyright (c) Tribufu. All Rights Reserved.
+// SPDX-License-Identifier: MIT
+
+using System.Collections.Generic;
+
+namespace Tribufu.Database.Repositories
+{
+    public class RepositorySeeder
+    {
+        private readonly IEnumerable<IRepository> _repositories;
+
+        public RepositorySeeder(IEnumerable<IRepository> repositories)
+        {
+            _repositories = repositories;
+        }
+
+        public void Run()
+        {
+            foreach (var repo in _repositories)
+            {
+                repo.SeedDefaults();
+            }
+        }
+    }
+}