Provide `Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAda…

…pter` package README (#57794)

src/Components/QuickGrid/Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter/src/PACKAGE.md

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+## About
+
+`Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter` provides an Entity Framework Core (EF Core) adapter for the [`Microsoft.AspNetCore.Components.QuickGrid`](https://www.nuget.org/packages/Microsoft.AspNetCore.Components.QuickGrid) package.
+
+## How to Use
+
+To use `Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter`, follow these steps:
+
+### Installation
+
+```shell
+dotnet add package Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter
+```
+
+### Configuration
+
+To register an EF-aware `IAsyncQueryExecutor` implementation, call `AddQuickGridEntityFrameworkAdapter` on the service collection in `Program.cs`:
+
+```csharp
+builder.Services.AddQuickGridEntityFrameworkAdapter();
+```
+
+## Additional Documentation
+
+For additional documentation and examples, refer to the [official documentation](https://learn.microsoft.com/aspnet/core/blazor/components/quickgrid#entity-framework-core-ef-core-data-source) on using EF Core with `QuickGrid`.
+
+## Feedback & Contributing
+
+`Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter` is released as open-source under the [MIT license](https://licenses.nuget.org/MIT). Bug reports and contributions are welcome at [the GitHub repository](https://github.com/dotnet/aspnetcore).