Added a button to regenerate the last AI response (#247)

app/MindWork AI Studio/Chat/ContentBlockComponent.razor

@@ -12,6 +12,12 @@
             <MudText Typo="Typo.body1">@this.Role.ToName() (@this.Time)</MudText>
         </CardHeaderContent>
         <CardHeaderActions>
+            @if (this.IsLastContentBlock && this.Role is ChatRole.AI && this.RegenerateFunc is not null)
+            {
+                <MudTooltip Text="Regenerate" Placement="Placement.Bottom">
+                    <MudIconButton Icon="@Icons.Material.Filled.Recycling" Color="Color.Tertiary" OnClick="@this.RegenerateBlock"/>
+                </MudTooltip>
+            }
             @if (this.RemoveBlockFunc is not null)
             {
                 <MudTooltip Text="Removes this block" Placement="Placement.Bottom">