Implemented the language plugin logic

app/MindWork AI Studio/Tools/PluginSystem/ILanguagePlugin.cs

@@ -0,0 +1,21 @@
+namespace AIStudio.Tools.PluginSystem;
+
+/// <summary>
+/// Represents a contract for a language plugin.
+/// </summary>
+public interface ILanguagePlugin
+{
+    /// <summary>
+    /// Tries to get a text from the language plugin.
+    /// </summary>
+    /// <remarks>
+    /// When the key does not exist, the value will be an empty string.
+    /// Please note that the key is case-sensitive. Furthermore, the keys
+    /// are in the format "root::key". That means that the keys are
+    /// hierarchical and separated by "::".
+    /// </remarks>
+    /// <param name="key">The key to use to get the text.</param>
+    /// <param name="value">The desired text.</param>
+    /// <returns>True if the key exists, false otherwise.</returns>
+    public bool TryGetText(string key, out string value);
+}

app/MindWork AI Studio/Tools/PluginSystem/PluginLanguage.cs

@@ -0,0 +1,48 @@
+using Lua;
+
+namespace AIStudio.Tools.PluginSystem;
+
+public sealed class PluginLanguage : PluginBase, ILanguagePlugin
+{
+    private readonly Dictionary<string, string> content = [];
+    
+    private ILanguagePlugin? baseLanguage;
+    
+    public PluginLanguage(string path, LuaState state, PluginType type) : base(path, state, type)
+    {
+        if (this.TryInitUITextContent(out var issue, out var readContent))
+            this.content = readContent;
+        else
+            this.pluginIssues.Add(issue);
+    }
+    
+    /// <summary>
+    /// Sets the base language plugin. This plugin will be used to fill in missing keys.
+    /// </summary>
+    /// <param name="baseLanguagePlugin">The base language plugin to use.</param>
+    public void SetBaseLanguage(ILanguagePlugin baseLanguagePlugin) => this.baseLanguage = baseLanguagePlugin;
+
+    /// <summary>
+    /// Tries to get a text from the language plugin.
+    /// </summary>
+    /// <remarks>
+    /// When the key neither in the base language nor in this language exist,
+    /// the value will be an empty string. Please note that the key is case-sensitive.
+    /// Furthermore, the keys are in the format "root::key". That means that
+    /// the keys are hierarchical and separated by "::".
+    /// </remarks>
+    /// <param name="key">The key to use to get the text.</param>
+    /// <param name="value">The desired text.</param>
+    /// <returns>True if the key exists, false otherwise.</returns>
+    public bool TryGetText(string key, out string value)
+    {
+        if (this.content.TryGetValue(key, out value!))
+            return true;
+        
+        if(this.baseLanguage is not null && this.baseLanguage.TryGetText(key, out value))
+            return true;
+        
+        value = string.Empty;
+        return false;
+    }
+}