[extensions] Add the image source to to onImageClicked (#1653)

Allow onImageClicked for the image embed builder

flutter_quill_extensions/lib/embeds/image/editor/image_embed.dart

@@ -56,8 +56,9 @@ class QuillEditorImageEmbedBuilder extends EmbedBuilder {
         QuillSharedExtensionsConfigurations.get(context: context)
             .imageSaverService;
     return GestureDetector(
-      onTap: configurations.onImageClicked ??
-          () => showDialog(
+      onTap: configurations.onImageClicked != null
+          ? () => configurations.onImageClicked!(imageSource)
+          : () => showDialog(
                 context: context,
                 builder: (_) => FlutterQuillLocalizationsWidget(
                   child: ImageOptionsMenu(

flutter_quill_extensions/lib/models/config/editor/image/image.dart

@@ -1,6 +1,5 @@
 import 'dart:io' show File;
 
-import 'package:flutter/foundation.dart' show VoidCallback;
 import 'package:flutter_quill/extensions.dart';
 import 'package:meta/meta.dart' show immutable;
 
@@ -103,8 +102,9 @@ class QuillEditorImageEmbedConfigurations {
 
   /// What should happen when the image is pressed?
   ///
-  /// By default will show `ImageOptionsMenu` dialog
-  final VoidCallback? onImageClicked;
+  /// By default will show `ImageOptionsMenu` dialog. If you want to handle what happens
+  /// to the image when it's clicked, you can pass a callback to this property.
+  final void Function(String imageSource)? onImageClicked;
 
   static ImageEmbedBuilderOnRemovedCallback get defaultOnImageRemovedCallback {
     return (imageUrl) async {