Added PowerPoint templates to the Slide Assistant (#1055)

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

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

@@ -0,0 +1,39 @@
+using Microsoft.AspNetCore.Components;
+
+namespace AIStudio.Components;
+
+/// <summary>
+/// A single, dense panel which hides content most users do not need, such as advanced options
+/// or the source code of a generated plugin.
+/// </summary>
+/// <remarks>
+/// Unlike the ExpansionPanel component, it brings its own panel list, so it stands anywhere in a
+/// form. The header text comes from the caller, which keeps the translation with the caller as
+/// well.
+/// </remarks>
+public partial class CompactExpansionPanel : ComponentBase
+{
+    [Parameter]
+    public string HeaderText { get; set; } = string.Empty;
+
+    [Parameter]
+    public string HeaderIcon { get; set; } = Icons.Material.Filled.Tune;
+
+    [Parameter]
+    public Color IconColor { get; set; } = Color.Inherit;
+
+    /// <summary>
+    /// Class names for the surrounding panel list, separated by space, e.g., for its margins.
+    /// </summary>
+    [Parameter]
+    public string Class { get; set; } = string.Empty;
+
+    [Parameter]
+    public bool Expanded { get; set; }
+
+    [Parameter]
+    public EventCallback<bool> ExpandedChanged { get; set; }
+
+    [Parameter]
+    public RenderFragment? ChildContent { get; set; }
+}