feat: Add visual crop preview widget for ImageCrop node - widget ImageCrop (#7825)

## Summary

Another implementation for image crop node, alternative for
https://github.com/Comfy-Org/ComfyUI_frontend/pull/7014
As discussed with @christian-byrne and @DrJKL we could have single
widget - IMAGECROP with 4 ints and UI preview.

However, this solution requires changing the definition of image crop
node in BE (sent
[here](https://github.com/comfyanonymous/ComfyUI/pull/11594)), which
will break the exsiting workflow, also it would not allow connect
separate int node as input, I am not sure it is a good idea.

So I keep two PRs openned for references

## Screenshots


https://github.com/user-attachments/assets/fde6938c-4395-48f6-ac05-6282c5eb8157

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7825-feat-Add-visual-crop-preview-widget-for-ImageCrop-node-widget-ImageCrop-2dc6d73d3650812bb8a2cdff4615032b)
by [Unito](https://www.unito.io)

src/lib/litegraph/src/widgets/widgetMap.ts

@@ -11,6 +11,7 @@ import { toClass } from '@/lib/litegraph/src/utils/type'
 import { AssetWidget } from './AssetWidget'
 import { BaseWidget } from './BaseWidget'
 import { BooleanWidget } from './BooleanWidget'
+import { BoundingBoxWidget } from './BoundingBoxWidget'
 import { ButtonWidget } from './ButtonWidget'
 import { ChartWidget } from './ChartWidget'
 import { ColorWidget } from './ColorWidget'
@@ -18,6 +19,7 @@ import { ComboWidget } from './ComboWidget'
 import { FileUploadWidget } from './FileUploadWidget'
 import { GalleriaWidget } from './GalleriaWidget'
 import { ImageCompareWidget } from './ImageCompareWidget'
+import { ImageCropWidget } from './ImageCropWidget'
 import { KnobWidget } from './KnobWidget'
 import { LegacyWidget } from './LegacyWidget'
 import { MarkdownWidget } from './MarkdownWidget'
@@ -50,6 +52,8 @@ export type WidgetTypeMap = {
   selectbutton: SelectButtonWidget
   textarea: TextareaWidget
   asset: AssetWidget
+  imagecrop: ImageCropWidget
+  boundingbox: BoundingBoxWidget
   [key: string]: BaseWidget
 }
 
@@ -120,6 +124,10 @@ export function toConcreteWidget<TWidget extends IWidget | IBaseWidget>(
       return toClass(TextareaWidget, narrowedWidget, node)
     case 'asset':
       return toClass(AssetWidget, narrowedWidget, node)
+    case 'imagecrop':
+      return toClass(ImageCropWidget, narrowedWidget, node)
+    case 'boundingbox':
+      return toClass(BoundingBoxWidget, narrowedWidget, node)
     default: {
       if (wrapLegacyWidgets) return toClass(LegacyWidget, widget, node)
     }