Added provider icons (#934)

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

app/MindWork AI Studio/Components/ProviderLabel.razor.cs

@@ -0,0 +1,46 @@
+using AIStudio.Provider;
+
+using Microsoft.AspNetCore.Components;
+
+namespace AIStudio.Components;
+
+/// <summary>
+/// Shows a provider icon next to its name.
+/// </summary>
+/// <remarks>
+/// Providers appear in select items, in table cells, and in group headers. All of them need the
+/// same icon and text pairing, so this component owns that layout once instead of repeating it at
+/// every call site.
+/// </remarks>
+public partial class ProviderLabel : ComponentBase
+{
+    /// <summary>
+    /// The configured provider whose icon should be shown. Takes precedence over ProviderType.
+    /// </summary>
+    [Parameter]
+    public AIStudio.Settings.Provider? ProviderSettings { get; set; }
+
+    /// <summary>
+    /// The LLM provider whose icon should be shown when no ProviderSettings was given.
+    /// </summary>
+    [Parameter]
+    public LLMProviders ProviderType { get; set; } = LLMProviders.NONE;
+
+    /// <summary>
+    /// The validated custom icon supplied by a configuration plugin.
+    /// </summary>
+    [Parameter]
+    public string CustomIconDataUrl { get; set; } = string.Empty;
+
+    /// <summary>
+    /// The text shown next to the icon.
+    /// </summary>
+    [Parameter]
+    public string Text { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Additional CSS class for the text.
+    /// </summary>
+    [Parameter]
+    public string TextClass { get; set; } = string.Empty;
+}