Moved all extension methods into extension blocks (#1155)

app/MindWork AI Studio/Settings/DataModel/PreviousModels/ProviderV4Extensions.cs

@@ -2,20 +2,26 @@ namespace AIStudio.Settings.DataModel.PreviousModels;
 
 public static class ProviderV4Extensions
 {
-    public static List<AIStudio.Settings.Provider> MigrateFromV4ToV5(this IEnumerable<Provider> providers)
+    extension(IEnumerable<Provider> providers)
     {
-        return providers.Select(provider => provider.MigrateFromV4ToV5()).ToList();
+        public List<AIStudio.Settings.Provider> MigrateFromV4ToV5()
+        {
+            return providers.Select(provider => provider.MigrateFromV4ToV5()).ToList();
+        }
     }
     
-    public static AIStudio.Settings.Provider MigrateFromV4ToV5(this Provider provider) => new()
+    extension(Provider provider)
     {
-        Num = provider.Num,
-        Id = provider.Id,
-        InstanceName = provider.InstanceName,
-        UsedLLMProvider = provider.UsedProvider,
-        Model = provider.Model,
-        IsSelfHosted = provider.IsSelfHosted,
-        Hostname = provider.Hostname,
-        Host = provider.Host,
-    };
+        public AIStudio.Settings.Provider MigrateFromV4ToV5() => new()
+        {
+            Num = provider.Num,
+            Id = provider.Id,
+            InstanceName = provider.InstanceName,
+            UsedLLMProvider = provider.UsedProvider,
+            Model = provider.Model,
+            IsSelfHosted = provider.IsSelfHosted,
+            Hostname = provider.Hostname,
+            Host = provider.Host,
+        };
+    }
 }