Add initial hcs database schema creation

Hcs.WebApp/Data/Hcs/HcsDbContext.cs

@@ -0,0 +1,12 @@
+using Microsoft.AspNetCore.Identity;
+using Microsoft.EntityFrameworkCore;
+
+namespace Hcs.WebApp.Data.Hcs
+{
+    public class HcsDbContext(DbContextOptions<HcsDbContext> options) : DbContext(options)
+    {
+        public DbSet<Registry> Registries { get; set; }
+
+        public DbSet<RegistryElement> Elements { get; set; }
+    }
+}