Add DI extension method to register NotionClient

Author: KoditkarVedant

Src/Notion.Client/DI/ServiceCollectionExtensions.cs

@@ -0,0 +1,20 @@
+using System;
+using Notion.Client;
+
+namespace Microsoft.Extensions.DependencyInjection
+{
+    public static class ServiceCollectionExtensions
+    {
+        public static IServiceCollection AddNotionClient(this IServiceCollection services, Action<ClientOptions> options) 
+        {
+            services.AddSingleton<INotionClient, NotionClient>(sp => {
+                var clientOptions = new ClientOptions();
+                options?.Invoke(clientOptions);
+
+                return NotionClientFactory.Create(clientOptions);
+            });
+
+            return services;
+        }
+    }
+}

Src/Notion.Client/Notion.Client.csproj

@@ -23,6 +23,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="JsonSubTypes" Version="1.8.0" />
 	  <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="5.0.0"/>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="5.0.0"/>
   </ItemGroup>
 
   <ItemGroup>