Aspire: Add WithProtoDefinition to support proto definition at server level (#1383)

* Add property UseHttp2 to WireMockServerArguments

* .

* additionalUrls

* ok?

* WireMockServerArguments

* fx

* AddProtoDefinition

* ...

* FIX

* Always add the lifecycle hook to support dynamic mappings and proto definitions

src/WireMock.Net.Minimal/Settings/SimpleSettingsParser.cs

@@ -55,7 +55,7 @@ internal class SimpleSettingsParser
         // Now also parse environment
         if (environment != null)
         {
-            foreach (string key in environment.Keys)
+            foreach (var key in environment.Keys.OfType<string>())
             {
                 if (key.StartsWith(Prefix, StringComparison.OrdinalIgnoreCase) && environment.TryGetStringValue(key, out var value))
                 {