Added profile, provider, and workspace preselection to chat templates (#1099)

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

app/MindWork AI Studio/Tools/Services/ChatLauncherDataSourcesResult.cs

@@ -0,0 +1,10 @@
+using AIStudio.Settings.DataModel;
+
+namespace AIStudio.Tools.Services;
+
+/// <summary>
+/// The data source options a chat started by an assistant chat launcher begins with.
+/// </summary>
+/// <param name="Options">The checked options of the chat, or null when the chosen data sources cannot be used.</param>
+/// <param name="ErrorMessage">Why no chat can be created with the chosen data sources, or an empty string when it can.</param>
+internal readonly record struct ChatLauncherDataSourcesResult(DataSourceOptions? Options, string ErrorMessage);