[Editor] Add some resizers all around an editor (bug 1843302)

- it'll improve the way to resize images: diagonally (in keeping ratio between dimensions)
  or horizontally/vertically.
- the resizer was almost invisible in HCM.
- make a resize undoable/redoable.

src/display/editor/ink.js

@@ -79,6 +79,7 @@ class InkEditor extends AnnotationEditor {
     this.translationX = this.translationY = 0;
     this.x = 0;
     this.y = 0;
+    this._willKeepAspectRatio = true;
   }
 
   /** @inheritdoc */
@@ -156,6 +157,11 @@ class InkEditor extends AnnotationEditor {
     ];
   }
 
+  /** @inheritdoc */
+  get resizeType() {
+    return AnnotationEditorParamsType.INK_DIMS;
+  }
+
   /**
    * Update the thickness and make this action undoable.
    * @param {number} thickness
@@ -619,6 +625,7 @@ class InkEditor extends AnnotationEditor {
     this.div.classList.add("disabled");
 
     this.#fitToContent(/* firstTime = */ true);
+    this.makeResizable();
 
     this.parent.addInkEditorIfNeeded(/* isCommitting = */ true);
 
@@ -754,6 +761,11 @@ class InkEditor extends AnnotationEditor {
     this.#observer.observe(this.div);
   }
 
+  /** @inheritdoc */
+  get isResizable() {
+    return !this.isEmpty() && this.#disableEditing;
+  }
+
   /** @inheritdoc */
   render() {
     if (this.div) {