feat(core): Refactor project structure for better modularity and code organization

ts_web/elements/viewer.ts

@@ -1,5 +1,4 @@
 import * as plugins from '../plugins.js';
-import * as interfaces from '../../ts/interfaces/index.js';
 
 import { DeesElement, css, cssManager, customElement, html } from '@design.estate/dees-element';
 import { demoFunc } from './viewer.demo.js';
@@ -18,7 +17,7 @@ export class DeDocumentViewer extends DeesElement {
   // INSTANCE
   public letterData: plugins.tsclass.business.ILetter = null;
 
-  public documentSettings: interfaces.IDocumentSettings;
+  public documentSettings: plugins.shared.interfaces.IDocumentSettings;
 
   public static styles = [
     cssManager.defaultStyles,