Added plugin architecture (#322)

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);
+}