fix: plugin compatibility for Config.Instance.SelectedLanguage

This commit reintroduces Config.Instance.SelectedLanguage as an obsolete
property after it was removed in a8fb90f.

If you're a plugin author you have two options:
- if you want to keep using the card language, call Helper.GetCardLanguage()
instead
- if you want to switch to using the Deck Tracker UI language, use
Config.Instance.Localization instead.

CHANGELOG.md

@@ -1,3 +1,7 @@
+## Unreleased
+**Plugins**:
+- Fixed compatibility with some older plugins relying on a deprecated property.
+
 ## **Release v1.37.4 - 2024-11-28**
 **Hearthstone**:
 - Added card icons for cards that return to hand at the end of the turn (Corpsicle, Libram of Divinity).

Hearthstone Deck Tracker/Config.cs

@@ -1194,6 +1194,10 @@ public class Config
 		[DefaultValue("BaseLight")]
 		public string ThemeName = "BaseLight";
 
+		[XmlIgnore]
+		[Obsolete("Use Helper.GetCardLanguage() instead to keep using the card language, or switch to Config.Instance.Localization to start using the UI language", true)]
+		public string SelectedLanguage = "enUS";
+
 		#endregion
 
 		private GameDetailsConfig? _gameDetails;