Chore: refactor zoom and editor mode to use enums

src-ui/src/app/components/common/pdf-editor/pdf-editor.component.ts

@@ -12,6 +12,7 @@ import { SETTINGS_KEYS } from 'src/app/data/ui-settings'
 import { DocumentService } from 'src/app/services/rest/document.service'
 import { SettingsService } from 'src/app/services/settings.service'
 import { ConfirmDialogComponent } from '../confirm-dialog/confirm-dialog.component'
+import { PdfEditorEditMode } from './pdf-editor-edit-mode'
 
 interface PageOperation {
   page: number
@@ -21,11 +22,6 @@ interface PageOperation {
   loaded?: boolean
 }
 
-export enum PdfEditorEditMode {
-  Update = 'update',
-  Create = 'create',
-}
-
 @Component({
   selector: 'pngx-pdf-editor',
   templateUrl: './pdf-editor.component.html',