Add 'Remove duplicate fonts' option to PDF merge functionality

src/pages/merge-pdf.html

@@ -270,6 +270,22 @@
             </span>
           </label>
 
+          <label
+            class="mt-4 flex items-start gap-2 text-sm text-gray-300 cursor-pointer"
+          >
+            <input
+              type="checkbox"
+              id="remove-duplicate-fonts"
+              class="mt-0.5 w-4 h-4 rounded text-indigo-600 bg-gray-700 border-gray-600"
+            />
+            <span
+              class="font-medium"
+              data-i18n="tools:mergePdf.removeDuplicateFonts"
+            >
+              Remove duplicate fonts
+            </span>
+          </label>
+
           <button id="process-btn" class="btn-gradient w-full mt-6">
             Merge PDFs
           </button>