Add EF Core support and refactor IRepository interface

Updated project dependencies to include `Microsoft.EntityFrameworkCore.Abstractions` for multiple target frameworks (`net462`, `net7.0`, `net8.0`, `net9.0`). Added `Microsoft.Extensions.*` package references to the project file.

Enhanced `IRepository` interface with methods for executing raw and interpolated SQL queries (`ExecuteSqlRawAsync`, `ExecuteSqlInterpolatedAsync`, etc.). Adjusted method declarations to support conditional compilation for `NET` and `NETFRAMEWORK`.

Refactored namespace structure in `IRepository.cs` to simplify and remove unnecessary conditional compilation directives.

DigitalData.Core.Abstraction.Application/Repository/IRepository.cs

@@ -1,4 +1,5 @@
 using System.Linq.Expressions;
+using Microsoft.EntityFrameworkCore.Query;
 #if NETFRAMEWORK
 using System;
 using System.Collections.Generic;
@@ -8,11 +9,29 @@ using System.Linq;
 #endif
 
 namespace DigitalData.Core.Abstraction.Application.Repository
-#if NET
-    ;
-#elif NETFRAMEWORK
+{
+    public interface IRepository
     {
+#if NET
+    public
 #endif
+        Task<int> ExecuteSqlRawAsync([NotParameterized] string sql, IEnumerable<object> parameters, CancellationToken cancel = default);
+
+#if NET
+    public
+#endif
+        Task<int> ExecuteSqlInterpolatedAsync(FormattableString sql, CancellationToken cancel = default);
+
+#if NET
+    public
+#endif
+        int ExecuteSqlRaw([NotParameterized] string sql, params object[] parameters);
+
+#if NET
+    public
+#endif
+        int ExecuteSqlInterpolated(FormattableString sql);
+    }
 
     public interface IRepository<TEntity>
     {
@@ -108,6 +127,4 @@ namespace DigitalData.Core.Abstraction.Application.Repository
         IQueryable<TEntity> ReadOnly();
         #endregion
     }
-#if NETFRAMEWORK
-    }
-#endif
+}