feat: wip on remove config command

src/AltGen.Console/Config/AppSettings.cs

@@ -0,0 +1,38 @@
+namespace AltGen.Console.Config;
+
+record AppSettings(ProviderSettings[] Providers)
+{
+  public AppSettings AddOrUpdateProvider(AddConfigCommand.Settings settings)
+  {
+    var updatedProviders = Providers.Select(p =>
+    {
+      if (p.Provider == settings.Provider)
+      {
+        return p with { Key = settings.Key, Default = settings.Default };
+      }
+
+      if (p.Provider != settings.Provider && settings.Default)
+      {
+        return p with { Default = false };
+      }
+
+      return p;
+    });
+
+    var provider = Providers.FirstOrDefault(p => p.Provider == settings.Provider);
+
+    if (provider is null)
+    {
+      var newProvider = new ProviderSettings(settings.Provider, settings.Key, settings.Default);
+      return this with { Providers = [.. updatedProviders, newProvider] };
+    }
+
+    return this with { Providers = [.. updatedProviders] };
+  }
+
+  public AppSettings RemoveProvider(RemoveConfigCommand.Settings settings)
+  {
+    var updatedProviders = Providers.Where(p => p.Provider != settings.Provider);
+    return this with { Providers = [.. updatedProviders] };
+  }
+}