Added initial Selenium E2E test setup

tests/Berufsschule_HAM.E2ETests/Helper/AppHelper.cs

@@ -0,0 +1,45 @@
+using System.Diagnostics;
+using System.Net;
+using Microsoft.AspNetCore.Mvc.Routing;
+
+namespace Berufsschule_HAM.E2ETests.Helper;
+
+public static class AppHelper
+{
+    public static async Task<Process> StartApp(string appUrl)
+    {
+        var startInfo = new ProcessStartInfo
+        {
+            FileName = "/snap/bin/dotnet",
+            Arguments = "run --project ../../../../../src/",
+            WorkingDirectory = AppContext.BaseDirectory,
+            UseShellExecute = false,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+        };
+        startInfo.EnvironmentVariables["ASPNETCORE_ENVIRONMENT"] = "Development";
+
+
+        var process = new Process { StartInfo = startInfo };// Process process = Process.Start("/snap/bin/dotnet", "run -e Development");
+        process.Start();
+        using var client = new HttpClient();
+        for (int i = 0; i < 60; i++)
+        {
+            try
+            {
+                var response = await client.GetAsync(appUrl);
+                if (response.StatusCode == HttpStatusCode.OK)
+                {
+                    return process;
+                }
+                else if (response.StatusCode != HttpStatusCode.RequestTimeout)
+                {
+                    throw new Exception($"Server did not start properly? {response.StatusCode}");
+                }
+            }
+            catch (Exception) { }
+            Thread.Sleep(1000);
+        }
+        throw new Exception("Server did not start within 60 seconds");
+    }
+}