Create a base class for all ADO.NET databases

This will allow use of all ADO.NET databases without need to reference
exact package for the ADO.NET component.

For example, EfCore will be able to use PostgreSQL and SQL Server
without need to depend on either package.

src/DataIsland.Core/AdoNetDatabaseTenant.cs

@@ -0,0 +1,10 @@
+namespace DataIsland;
+
+/// <summary>
+/// A base tenant for relational databases.
+/// </summary>
+/// <param name="ConnectionString">Connection string to the database.</param>
+/// <param name="DatabaseName">Name of the database (unescaped).</param>
+public abstract record AdoNetDatabaseTenant(string ConnectionString, string DatabaseName)
+{
+}

src/DataIsland.EfCore/DataIsland.EfCore.csproj

@@ -8,14 +8,14 @@
 
   <ItemGroup>
     <PackageReference Include="JetBrains.Annotations" Version="2024.2.0" />
-    <PackageReference Include="Microsoft.Data.SqlClient" Version="5.2.1" />
+    <!--<PackageReference Include="Microsoft.Data.SqlClient" Version="5.2.1" />-->
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.8" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="8.0.8" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.1" />
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\DataIsland.SqlServer\DataIsland.SqlServer.csproj" />
+    <ProjectReference Include="..\DataIsland.Core\DataIsland.Core.csproj" />
   </ItemGroup>
 
 </Project>

src/DataIsland.EfCore/EfCorePatcher.cs

@@ -3,7 +3,6 @@
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
-using DataIsland.SqlServer;
 
 namespace DataIsland.EfCore;
 
@@ -47,7 +46,7 @@ public void Register(IServiceCollection serviceCollection)
         Func<IServiceProvider, object> newFactory = sp =>
         {
             var testContext = sp.GetRequiredService<ITestContext>();
-            var tenant = testContext.GetTenant<SqlDatabaseTenant>(typeof(TDbContext));
+            var tenant = testContext.GetTenant<AdoNetDatabaseTenant>(typeof(TDbContext));
 
             var originalOptions = (DbContextOptions<TDbContext>)originalFactory(sp);
             var relationalExtension = originalOptions.Extensions.OfType<RelationalOptionsExtension>().Single();

src/DataIsland.SqlServer/SqlDatabaseTenant.cs

@@ -1,3 +1,4 @@
 namespace DataIsland.SqlServer;
 
-public record SqlDatabaseTenant(string ConnectionString, SqlServerComponent Component, string DatabaseName);
+public record SqlDatabaseTenant(string ConnectionString, SqlServerComponent Component, string DatabaseName)
+    : AdoNetDatabaseTenant(ConnectionString, DatabaseName);