Add Azure Application Insights packages and basic configuration

Co-authored-by: BenjaminMichaelis <[email protected]>

Author: Copilot

Directory.Packages.props

@@ -18,6 +18,8 @@
   <ItemGroup>
     <PackageVersion Include="AspNet.Security.OAuth.GitHub" Version="8.3.0" />
     <PackageVersion Include="Azure.Identity" Version="1.12.1" />
+    <PackageVersion Include="Azure.Monitor.OpenTelemetry.AspNetCore" Version="1.3.0" />
+    <PackageVersion Include="Microsoft.ApplicationInsights.Profiler.AspNetCore" Version="2.6.0" />
     <PackageVersion Include="coverlet.collector" Version="6.0.4" />
     <PackageVersion Include="EssentialCSharp.Shared.Models" Version="$(ToolingPackagesVersion)" />
     <PackageVersion Include="HtmlAgilityPack" Version="1.11.72" />

EssentialCSharp.Web/EssentialCSharp.Web.csproj

@@ -15,13 +15,15 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.Identity" />
+    <PackageReference Include="Azure.Monitor.OpenTelemetry.AspNetCore" />
     <PackageReference Include="AspNet.Security.OAuth.GitHub" />
     <PackageReference Include="EssentialCSharp.Shared.Models" />
     <PackageReference Include="HtmlAgilityPack" />
     <PackageReference Include="IntelliTect.Multitool" />
     <PackageReference Include="Mailjet.Api" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.MicrosoftAccount" />
+    <PackageReference Include="Microsoft.ApplicationInsights.Profiler.AspNetCore" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.UI" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" />

EssentialCSharp.Web/Program.cs

@@ -1,10 +1,11 @@
-using EssentialCSharp.Web.Areas.Identity.Data;
-using EssentialCSharp.Web.Areas.Identity.Services.PasswordValidators;
+using EssentialCSharp.Web.Areas.Identity.Data;
+using EssentialCSharp.Web.Areas.Identity.Services.PasswordValidators;
 using EssentialCSharp.Web.Data;
-using EssentialCSharp.Web.Extensions;
-using EssentialCSharp.Web.Middleware;
+using EssentialCSharp.Web.Extensions;
+using EssentialCSharp.Web.Middleware;
 using EssentialCSharp.Web.Services;
-using EssentialCSharp.Web.Services.Referrals;
+using EssentialCSharp.Web.Services.Referrals;
+using Azure.Monitor.OpenTelemetry.AspNetCore;
 using Mailjet.Client;
 using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.AspNetCore.Identity;
@@ -34,8 +35,13 @@ private static void Main(string[] args)
         ConfigurationManager configuration = builder.Configuration;
         string connectionString = builder.Configuration.GetConnectionString("EssentialCSharpWebContextConnection") ?? throw new InvalidOperationException("Connection string 'EssentialCSharpWebContextConnection' not found.");
 
-        builder.Logging.AddConsole();
-        builder.Services.AddHealthChecks();
+        builder.Logging.AddConsole();
+        builder.Services.AddHealthChecks();
+
+        // Configure Azure Application Insights with OpenTelemetry
+        builder.Services.AddOpenTelemetry().UseAzureMonitor();
+        builder.Services.AddApplicationInsightsTelemetry();
+        builder.Services.AddServiceProfiler();
 
         builder.Services.AddDbContext<EssentialCSharpWebContext>(options => options.UseSqlServer(connectionString));
         builder.Services.AddDefaultIdentity<EssentialCSharpWebUser>(options =>