TF-675 Add AttachmentUploadDataSource and implement upload attachment

lib/features/upload/data/datasource/attachment_upload_datasource.dart

@@ -0,0 +1,8 @@
+
+import 'package:dio/dio.dart';
+import 'package:model/upload/file_info.dart';
+import 'package:tmail_ui_user/features/upload/domain/model/upload_attachment.dart';
+
+abstract class AttachmentUploadDataSource {
+  UploadAttachment uploadAttachment(FileInfo fileInfo, Uri uploadUri, {CancelToken? cancelToken});
+}

lib/features/upload/data/datasource_impl/attachment_upload_datasource_impl.dart

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+
+import 'package:dio/dio.dart';
+import 'package:model/upload/file_info.dart';
+import 'package:tmail_ui_user/features/upload/data/datasource/attachment_upload_datasource.dart';
+import 'package:tmail_ui_user/features/upload/data/network/file_uploader.dart';
+import 'package:tmail_ui_user/features/upload/domain/model/upload_attachment.dart';
+import 'package:tmail_ui_user/features/upload/domain/model/upload_task_id.dart';
+import 'package:uuid/uuid.dart';
+
+class AttachmentUploadDataSourceImpl extends AttachmentUploadDataSource {
+
+  final FileUploader _fileUploader;
+
+  AttachmentUploadDataSourceImpl(this._fileUploader);
+
+  @override
+  UploadAttachment uploadAttachment(FileInfo fileInfo, Uri uploadUri, {CancelToken? cancelToken}) {
+    final attachmentUploadId = _generateAttachmentUploadId();
+    final uploadAttachment = UploadAttachment(
+          attachmentUploadId,
+          fileInfo,
+          uploadUri,
+          _fileUploader,
+          cancelToken: cancelToken)
+      ..upload();
+
+    return uploadAttachment;
+  }
+
+  UploadTaskId _generateAttachmentUploadId() {
+    return UploadTaskId(const Uuid().v4());
+  }
+}