[fix] analyzer warnings and XML comments

Author: i4004

src/TestClient/Program.cs

@@ -13,8 +13,8 @@
 
 var result = client.ExecuteAsync(request).Result;
 
-if (result.IsSuccessful != true)
+if (!result.IsSuccessful)
 	throw new InvalidOperationException("Error sending file: " + result.Content);
 
 Console.WriteLine("HTTP status: " + result.StatusCode);
-Console.ReadLine();
+Console.ReadLine();

src/TestServer/Controllers/Api/v1/TestInController.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Diagnostics;
 using System.IO;
-using System.Linq;
 using System.Threading.Tasks;
 using Simplify.Web;
 using Simplify.Web.Attributes;
@@ -14,17 +13,17 @@ public class TestInController : Controller2<MultipartViewModel>
 {
 	public async Task<ControllerResponse> Invoke()
 	{
-		var file = Model.Files.FirstOrDefault() ?? throw new ArgumentException("No files in model");
+		var file = Model.Files[0] ?? throw new ArgumentException("No files in model");
 		using var stream = new StreamReader(file.Data);
 		var fileData = await stream.ReadToEndAsync();
 
-		Trace.WriteLine($"Files count: '{Model.Files.Count}'");
+		Trace.TraceInformation($"Files count: '{Model.Files.Count}'");
 		Console.WriteLine($"Files count: '{Model.Files.Count}'");
 
-		Trace.WriteLine($"File name: '{file.FileName}'");
+		Trace.TraceInformation($"File name: '{file.FileName}'");
 		Console.WriteLine($"File name: '{file.FileName}'");
 
-		Trace.WriteLine($"File content: '{fileData}'");
+		Trace.TraceInformation($"File content: '{fileData}'");
 		Console.WriteLine($"File content: '{fileData}'");
 
 		// Assert

src/TestServer/Properties/launchSettings.json

@@ -1,29 +1,22 @@
 {
-	"iisSettings":
-	{
+	"iisSettings": {
 		"windowsAuthentication": false,
 		"anonymousAuthentication": true,
-		"iisExpress":
-		{
+		"iisExpress": {
 			"applicationUrl": "http://localhost:5000",
 			"sslPort": 0
 		}
 	},
-	"profiles":
-	{
-		"IIS Express":
-		{
+	"profiles": {
+		"IIS Express": {
 			"commandName": "IISExpress",
-			"environmentVariables":
-			{
+			"environmentVariables": {
 				"ASPNETCORE_ENVIRONMENT": "Development"
 			}
 		},
-		"TesterApp":
-		{
+		"TesterApp": {
 			"commandName": "Project",
-			"environmentVariables":
-			{
+			"environmentVariables": {
 				"ASPNETCORE_ENVIRONMENT": "Development"
 			},
 			"launchBrowser": true,