refactor(file-handler): replace innerHTML with DOM methods for safer rendering

refactor(form-filler): improve form field creation with DOM methods
refactor(compare-pdfs): use textContent instead of innerHTML
refactor(duplicate-organize): replace innerHTML with DOM methods
style(main): remove commented start app line
feat(config): add pdf-tools config file with tool categories

src/js/config/pdf-tools.ts

@@ -0,0 +1,17 @@
+export const singlePdfLoadTools = [
+  'split', 'organize', 'rotate', 'add-page-numbers',
+  'pdf-to-jpg', 'pdf-to-png', 'pdf-to-webp', 'compress', 'pdf-to-greyscale',
+  'edit-metadata', 'remove-metadata', 'flatten', 'delete-pages', 'add-blank-page',
+  'extract-pages', 'add-watermark', 'add-header-footer', 'invert-colors', 'view-metadata',
+  'reverse-pages', 'crop', 'redact', 'pdf-to-bmp', 'pdf-to-tiff', 'split-in-half',
+  'page-dimensions', 'n-up', 'duplicate-organize', 'combine-single-page', 'fix-dimensions', 'change-background-color',
+  'change-text-color', 'ocr-pdf', 'sign-pdf', 'remove-annotations', 'cropper', 'form-filler',
+];
+
+export const simpleTools = [
+  'encrypt', 'decrypt', 'change-permissions', 'pdf-to-markdown', 'word-to-pdf',
+];
+
+export const multiFileTools = [
+  'merge', 'pdf-to-zip', 'jpg-to-pdf', 'png-to-pdf', 'webp-to-pdf', 'image-to-pdf', 'svg-to-pdf', 'bmp-to-pdf', 'heic-to-pdf', 'tiff-to-pdf',
+];