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/Assistants/Builder/AssistantBuilderChatLaunchMetadata.cs

@@ -0,0 +1,10 @@
+namespace AIStudio.Assistants.Builder;
+
+internal sealed class AssistantBuilderChatLaunchMetadata
+{
+    public string WorkspaceName { get; init; } = string.Empty;
+    public string? ProviderId { get; init; }
+    public string? ProfileId { get; init; }
+    public string? ChatTemplateId { get; init; }
+    public string[]? DataSourceIds { get; init; }
+}