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/extensions/core/imageCrop.ts

@@ -0,0 +1,12 @@
+import { useExtensionService } from '@/services/extensionService'
+
+useExtensionService().registerExtension({
+  name: 'Comfy.ImageCrop',
+
+  async nodeCreated(node) {
+    if (node.constructor.comfyClass !== 'ImageCrop') return
+
+    const [oldWidth, oldHeight] = node.size
+    node.setSize([Math.max(oldWidth, 300), Math.max(oldHeight, 450)])
+  }
+})

src/extensions/core/index.ts

@@ -10,6 +10,7 @@ import './groupNode'
 import './groupNodeManage'
 import './groupOptions'
 import './imageCompare'
+import './imageCrop'
 import './load3d'
 import './maskeditor'
 import './nodeTemplates'