Feature/v2/pageeditor improved (#4289)

# Description of Changes

<!--
Please provide a summary of the changes, including:

Rewrite of page editor to make it work properly.  
Added page breaks
Added merged file support
Added "insert file" support
Slight Ux improvements

Closes #(issue_number)
-->

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: Anthony Stirling <[email protected]>

frontend/src/components/layout/Workbench.tsx

@@ -111,11 +111,15 @@ export default function Workbench() {
                 onRotate={pageEditorFunctions.handleRotate}
                 onDelete={pageEditorFunctions.handleDelete}
                 onSplit={pageEditorFunctions.handleSplit}
-                onExportSelected={pageEditorFunctions.onExportSelected}
+                onSplitAll={pageEditorFunctions.handleSplitAll}
+                onPageBreak={pageEditorFunctions.handlePageBreak}
+                onPageBreakAll={pageEditorFunctions.handlePageBreakAll}
                 onExportAll={pageEditorFunctions.onExportAll}
                 exportLoading={pageEditorFunctions.exportLoading}
                 selectionMode={pageEditorFunctions.selectionMode}
                 selectedPages={pageEditorFunctions.selectedPages}
+                splitPositions={pageEditorFunctions.splitPositions}
+                totalPages={pageEditorFunctions.totalPages}
               />
             )}
           </>