Copy entire chats & Rollback chats to certain message (#992)

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

app/MindWork AI Studio/Components/ChatComponent.razor

@@ -26,6 +26,8 @@
                         IsSecondToLastBlock="@isSecondLastBlock"
                         RegenerateFunc="@this.RegenerateBlock"
                         RegenerateEnabled="@(() => this.IsProviderSelected && this.ChatThread.IsLLMProviderAllowed(this.Provider))"
+                        RollbackFunc="@this.RollbackBlock"
+                        RollbackEnabled="@(() => !this.IsCurrentChatStreaming)"
                         EditLastBlockFunc="@this.EditLastBlock"
                         EditLastUserBlockFunc="@this.EditLastUserBlock"/>
                 }
@@ -101,6 +103,10 @@
                 <MudTooltip Text="@T("Move the chat to a workspace, or to another if it is already in one.")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
                     <MudIconButton Icon="@Icons.Material.Filled.MoveToInbox" Disabled="@(!this.CanThreadBeSaved || this.IsCurrentChatStreaming)" OnClick="@this.MoveChatToWorkspace"/>
                 </MudTooltip>
+
+                <MudTooltip Text="@T("Copy this chat & continue in the copy.")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
+                    <MudIconButton Icon="@Icons.Material.Filled.ContentCopy" Disabled="@(!this.CanThreadBeCopied)" OnClick="@this.CopyCurrentChat"/>
+                </MudTooltip>
             }
             
             <AttachDocuments Name="File Attachments" DocumentPaths="@this.ComposerState.FileAttachments" DocumentPathsChanged="@this.ComposerAttachmentsChanged" CatchAllDocuments="true" UseSmallForm="true" ShowMediaStatus="false" Provider="@this.Provider" OwnerChat="@this.ChatThread" EnsureOwnerChatAsync="@this.EnsureMediaImportChatAsync" Disabled="@this.MediaTranscriptionService.IsBusy(this.CurrentMediaImportOwner)"/>