ISTWCMS-4872: adding image style for image gallery square

config/install/image.style.uw_is_image_gallery_square.yml

+langcode: en
+status: true
+dependencies: {  }
+name: uw_is_image_gallery_square
+label: 'Image gallery square'
+effects:
+  30253266-95cd-4126-93c4-9df561846906:
+    uuid: 30253266-95cd-4126-93c4-9df561846906
+    id: image_scale
+    weight: 1
+    data:
+      width: 400
+      height: 400
+      upscale: true
+pipeline: ''