chore: migrate Transifex config from legacy files to YAML format

Replace old deepin.conf and ts2desktop scripts with modern transifex.yaml
configuration for better maintainability.

从旧版配置文件迁移到新的YAML格式，提高可维护性。

Log: 迁移Transifex配置到YAML格式

Author: lzwind

.tx/deepin.conf

@@ -0,0 +1,16 @@
+# SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+#
+# SPDX-License-Identifier: CC0-1.0
+filters:
+  - filter_type: file
+    source_file: translations/deepin-compressor.ts
+    file_format: QT
+    source_language: en_US
+    translation_files_expression: translations/deepin-compressor_<lang>.ts
+  - filter_type: file
+    source_file: translations/desktop/desktop.ts
+    file_format: QT
+    source_language: en_US
+    translation_files_expression: translations/desktop/desktop_<lang>.ts
+settings:
+  pr_branch_name: transifex_update_<br_unique_id>