Add houses page

Hcs.WebApp/Services/HouseService.cs

@@ -0,0 +1,14 @@
+using Hcs.WebApp.Data.Hcs;
+using Microsoft.EntityFrameworkCore;
+
+namespace Hcs.WebApp.Services
+{
+    public class HouseService(IDbContextFactory<HcsDbContext> factory) : HcsServiceBase(factory)
+    {
+        public async Task<IEnumerable<House>> GetAllHousesAsync()
+        {
+            using var context = GetNewContext();
+            return await context.Houses.ToListAsync();
+        }
+    }
+}