TF-3084 Handle drop image to identity editor for public asset

lib/features/upload/domain/extensions/file_info_extension.dart

@@ -1,4 +1,5 @@
 
+import 'package:file_picker/file_picker.dart';
 import 'package:model/upload/file_info.dart';
 import 'package:tmail_ui_user/features/upload/domain/model/mobile_file_upload.dart';
 
@@ -14,4 +15,12 @@ extension FileInfoExtension on FileInfo {
     type: type,
     isInline: true,
     isShared: isShared);
+
+  PlatformFile toPlatformFile() => PlatformFile(
+    name: fileName,
+    path: filePath,
+    size: fileSize,
+    bytes: bytes,
+    readStream: readStream,
+  );
 }

lib/features/upload/domain/extensions/list_file_info_extension.dart

@@ -1,7 +1,10 @@
+
 import 'package:model/upload/file_info.dart';
 
 extension ListFileInfoExtension on List<FileInfo> {
   List<int> get listSize => map((file) => file.fileSize).toList();
 
   num get totalSize => listSize.isEmpty ? 0 : listSize.reduce((sum, size) => sum + size);
+
+  List<FileInfo> get listInlineFiles => where((fileInfo) => fileInfo.isInline == true).toList();
 }

lib/features/upload/domain/extensions/list_platform_file_extensions.dart

@@ -0,0 +1,6 @@
+
+import 'package:file_picker/file_picker.dart';
+
+extension ListPlatformFileExtensions on List<PlatformFile> {
+  int get totalFilesSize => fold<int>(0, (sum, file) => sum + file.size);
+}