Add helper method for adding logging.

Author: bgrainger

docs/UsingMicrosoftExtensionsLogging.md

@@ -1,6 +1,12 @@
 ## How to Use
 
-To integrate MySqlConnector with Microsoft.Extensions.Logging, add the following line of code to your `Startup.Configure` method (before any `MySqlConnector` objects have been used):
+To integrate MySqlConnector with Microsoft.Extensions.Logging, add the following line of code to `Program.cs` method (before any `MySqlConnector` objects have been used):
+
+```csharp
+app.Services.UseMySqlConnectorLogging();
+```
+
+Alternatively, obtain an `ILoggerFactory` through dependency injection and add:
 
 ```csharp
 MySqlConnectorLogManager.Provider = new MicrosoftExtensionsLoggingLoggerProvider(loggerFactory);

src/MySqlConnector.Logging.Microsoft.Extensions.Logging/MySqlConnectorLoggingExtensions.cs

@@ -0,0 +1,17 @@
+using System;
+using Microsoft.Extensions.Logging;
+using MySqlConnector.Logging;
+
+namespace Microsoft.Extensions.DependencyInjection;
+
+public static class MySqlConnectorLoggingExtensions
+{
+	public static IServiceProvider UseMySqlConnectorLogging(this IServiceProvider services)
+	{
+		var loggerFactory = (ILoggerFactory) services.GetService(typeof(ILoggerFactory));
+		if (loggerFactory is null)
+			throw new InvalidOperationException("No ILoggerFactory service has been registered.");
+		MySqlConnectorLogManager.Provider = new MicrosoftExtensionsLoggingLoggerProvider(loggerFactory);
+		return services;
+	}
+}

src/MySqlConnector.Logging.Microsoft.Extensions.Logging/docs/README.md

@@ -4,7 +4,13 @@ This package integrates MySqlConnector logging with the Microsoft.Extensions.Log
 
 ## How to Use
 
-Add the following line of code to your `Startup.Configure` method (before any `MySqlConnector` objects have been used):
+Add the following line of code to `Program.cs` method (before any `MySqlConnector` objects have been used):
+
+```csharp
+app.Services.UseMySqlConnectorLogging();
+```
+
+Alternatively, obtain an `ILoggerFactory` through dependency injection and add:
 
 ```csharp
 MySqlConnectorLogManager.Provider = new MicrosoftExtensionsLoggingLoggerProvider(loggerFactory);