Add OTEL tracing support for Wiremock + automatic OTEL for Aspire integration (#1418)

* Update aspire to 13.1 (examples + code)

Allows usage of aspire CLI which is very useful for dev in codespaces (for my next PR).

* Add OTEL support

* Initial PR feedback

* PR feedback

* PR feedback

* PR feedback

* Cleanup.

* Cleanup

* Fix

* Fix

* Rename stuff around to be more accurate

* PR feedback

* Update WireMock.Net.OpenTelemetry.csproj

Update <Authors>

* PR feedback parser

* PR feedback package versions

* Status code feedback.

* Update preprocessor directives to to Activity Tracing instead of OpenTelemetry. Is more descriptive.

* Add tests

* Improve tests

---------

Co-authored-by: Stef Heyenrath <Stef.Heyenrath@gmail.com>

src/WireMock.Net.OpenTelemetry/OpenTelemetryOptionsParser.cs

@@ -0,0 +1,44 @@
+// Copyright © WireMock.Net
+
+using System.Collections;
+using Stef.Validation;
+using WireMock.Settings;
+
+namespace WireMock.OpenTelemetry;
+
+/// <summary>
+/// A static helper class to parse commandline arguments into OpenTelemetryOptions.
+/// </summary>
+public static class OpenTelemetryOptionsParser
+{
+    private const string Prefix = "OpenTelemetry";
+
+    /// <summary>
+    /// Parse commandline arguments into OpenTelemetryOptions.
+    /// </summary>
+    /// <param name="args">The commandline arguments</param>
+    /// <param name="environment">The environment settings (optional)</param>
+    /// <param name="options">The parsed options, or null if OpenTelemetry is not enabled</param>
+    /// <returns>Always returns true.</returns>
+    public static bool TryParseArguments(string[] args, IDictionary? environment, out OpenTelemetryOptions? options)
+    {
+        Guard.HasNoNulls(args);
+
+        var parser = new SimpleSettingsParser();
+        parser.Parse(args, environment);
+
+        if (!parser.GetBoolValue($"{Prefix}Enabled"))
+        {
+            options = null;
+            return true;
+        }
+
+        options = new OpenTelemetryOptions
+        {
+            ExcludeAdminRequests = parser.GetBoolValue($"{Prefix}ExcludeAdminRequests", defaultValue: true),
+            OtlpExporterEndpoint = parser.GetStringValue($"{Prefix}OtlpExporterEndpoint")
+        };
+
+        return true;
+    }
+}