816 add example with dotnet script (#834)

* Add the HelloWorld script file

* Add the HttpSendJson script file

Author: OleksPal

examples/Demo/Demo.csproj

@@ -133,6 +133,7 @@
 
     <ItemGroup>
       <Folder Include="DB\Redis\" />
+      <Folder Include="Scripting\" />
     </ItemGroup>
 
     <ItemGroup>

examples/Demo/Scripting/HelloWorldExample.csx

@@ -0,0 +1,21 @@
+#r "nuget: NBomber, 6.0.2"
+
+using NBomber.CSharp;
+
+var scenario = Scenario.Create("hello_world_scenario", async context =>
+{
+    // you can define and execute any logic here,
+    // for example: send http request, SQL query etc
+    // NBomber will measure how much time it takes to execute your logic
+    await Task.Delay(500);
+
+    return Response.Ok();
+})
+.WithoutWarmUp()
+.WithLoadSimulations(
+    Simulation.Inject(rate: 150, interval: TimeSpan.FromSeconds(1), during: TimeSpan.FromSeconds(30))
+);
+
+NBomberRunner
+    .RegisterScenarios(scenario)
+    .Run();

examples/Demo/Scripting/HttpSendJsonExample.csx

@@ -0,0 +1,55 @@
+#r "nuget: NBomber, 6.0.2"
+#r "nuget: NBomber.Http, 6.0.2"
+#r "nuget: System.Net.Http, 4.3.4"
+
+using System.Text.Json;
+using NBomber.CSharp;
+using NBomber.Http;
+using NBomber.Http.CSharp;
+using NBomber.Plugins.Network.Ping;
+using System.Net.Http;
+
+public class UserData
+{
+    public int UserId { get; set; }
+    public int Id { get; set; }
+    public string Title { get; set; }
+    public bool Completed { get; set; }
+}
+
+var httpClient = new HttpClient();
+
+var scenario = Scenario.Create("http_scenario", async context =>
+{
+    // example of WithJsonBody
+    var user = new UserData { UserId = 1, Title = "anton" };
+
+    var request1 =
+        Http.CreateRequest("GET", "https://nbomber.com")
+            .WithJsonBody(user);
+
+    var response1 = await Http.Send(httpClient, request1);
+
+    // example of typed Send<T> that deserialize JSON response
+    var request2 =
+        Http.CreateRequest("GET", "https://jsonplaceholder.typicode.com/todos/1")
+            .WithHeader("Content-Type", "application/json");
+
+    var response2 = await Http.Send<UserData>(httpClient, request2);
+
+    var userData = response2.Payload.Value.Data;
+    var title = userData.Title;
+    var userId = userData.UserId;
+
+    return response2;
+})
+.WithoutWarmUp()
+.WithLoadSimulations(Simulation.Inject(rate: 5, interval: TimeSpan.FromSeconds(1), during: TimeSpan.FromSeconds(30)));
+
+NBomberRunner
+    .RegisterScenarios(scenario)
+    .WithWorkerPlugins(
+        new PingPlugin(PingPluginConfig.CreateDefault("nbomber.com")),
+        new HttpMetricsPlugin(new[] { HttpVersion.Version1 })
+    )
+    .Run();