Replace the image layer type with an Image node (#948)

* Use builder pattern for widgets

* Arguments to new function

* Add node graph when dragging in image

* Fix duplicate import

* Skip processing under node graph frame if unused

* Reduce node graph rerenders

* DUPLICATE ALL frontend changes into other frontend

* DUPLICATE more changes to another frontend

* Code review

* Allow importing SVG files as bitmaps

Co-authored-by: Keavon Chambers <keavon@keavon.com>

Cargo.lock

@@ -1744,6 +1744,7 @@ version = "0.0.0"
 dependencies = [
  "bezier-rs",
  "graph-craft",
+ "graphene-core",
  "graphite-document-legacy",
  "graphite-editor",
  "js-sys",
@@ -1762,6 +1763,7 @@ version = "0.0.0"
 dependencies = [
  "bezier-rs",
  "graph-craft",
+ "graphene-core",
  "graphite-document-legacy",
  "graphite-editor",
  "js-sys",