add sdk usage example to print users count 🎉

Author: KoditkarVedant

examples/list-users/Program.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Threading.Tasks;
+using System.Linq;
+using Notion.Client;
+
+namespace list_users
+{
+    class Program
+    {
+        static async Task Main(string[] args)
+        {
+            var client = new NotionClient(new ClientOptions
+            {
+                AuthToken = "<Token>"
+            });
+
+            var usersList = await client.Users.ListAsync();
+
+            Console.WriteLine(usersList.Results.Count());
+        }
+    }
+}

examples/list-users/list-users.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+    <RootNamespace>list_users</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Notion.Net" Version="0.2.0-beta" />
+  </ItemGroup>
+
+</Project>