Added direct-chat launchers for assistant plugins and a dialog to reconfigure them (#935)

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

app/MindWork AI Studio/Pages/Assistants.razor

@@ -40,6 +40,7 @@
                                     Link="@launchLink"
                                     OnClick="@(() => this.StartAssistantPluginAsync(assistantPlugin))">
                         <AdditionalActions>
+                            <DirectChatLauncherSettingsAction Plugin="@assistantPlugin" />
                             @if (availablePlugin is not null)
                             {
                                 <PluginDeleteAction Plugin="@availablePlugin" />