Added icons to visualize model capabilities to the provider dropdown menu (#829)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Provider/ReasoningIndicatorState.cs

@@ -0,0 +1,27 @@
+namespace AIStudio.Provider;
+
+/// <summary>
+/// Describes whether the provider selection should show the reasoning capability icon.
+/// </summary>
+public enum ReasoningIndicatorState
+{
+    /// <summary>
+    /// Do not show a reasoning indicator for the configured provider.
+    /// </summary>
+    NONE,
+
+    /// <summary>
+    /// Show that the selected model always performs reasoning.
+    /// </summary>
+    ALWAYS_ON,
+
+    /// <summary>
+    /// Show that reasoning is enabled by the provider or model default.
+    /// </summary>
+    DEFAULT_ON,
+
+    /// <summary>
+    /// Show that reasoning was explicitly enabled through the provider settings.
+    /// </summary>
+    CONFIGURED,
+}