V2 remove cert (#4239)

# Description of Changes

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## 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.

frontend/public/locales/en-GB/translation.json

@@ -1268,7 +1268,18 @@
     "title": "Remove Certificate Signature",
     "header": "Remove the digital certificate from the PDF",
     "selectPDF": "Select a PDF file:",
-    "submit": "Remove Signature"
+    "submit": "Remove Signature",
+    "description": "This tool will remove digital certificate signatures from your PDF document.",
+    "filenamePrefix": "unsigned",
+    "files": {
+      "placeholder": "Select a PDF file in the main view to get started"
+    },
+    "error": {
+      "failed": "An error occurred whilst removing certificate signatures."
+    },
+    "results": {
+      "title": "Certificate Removal Results"
+    }
   },
   "pageLayout": {
     "tags": "merge,composite,single-view,organize",