Added IONOS as a provider and unified how providers sort their model lists (#941)

app/MindWork AI Studio/Provider/Mistral/ProviderMistral.cs

@@ -91,10 +91,12 @@ public sealed class ProviderMistral() : BaseProvider(LLMProviders.MISTRAL, new U
         {
             Models =
             [
+                // Codestral is a fill-in-the-middle model, which we cannot use for chats. That is
+                // specific to Mistral's catalog, which is why it is not part of the shared model
+                // kind detection:
                 ..modelResponse.Models.Where(n =>
                     !n.Id.StartsWith("code", StringComparison.OrdinalIgnoreCase) &&
-                    !n.Id.Contains("embed", StringComparison.OrdinalIgnoreCase) &&
-                    !n.Id.Contains("moderation", StringComparison.OrdinalIgnoreCase))
+                    n.IsChatModel())
             ]
         };
     }
@@ -108,7 +110,7 @@ public sealed class ProviderMistral() : BaseProvider(LLMProviders.MISTRAL, new U
         
         return modelResponse with
         {
-            Models = [..modelResponse.Models.Where(n => n.Id.Contains("embed", StringComparison.InvariantCulture))]
+            Models = [..modelResponse.Models.Where(n => n.IsEmbeddingModel())]
         };
     }