[FIX] l10n_cn: move china city data into separate module

Changes made at #23879 changed the dependency of l10n_cn to include a large
list of cities.
Move to a different module to make the l10n_cn more lightweight.

Closes #26592

addons/l10n_cn/__manifest__.py

@@ -15,18 +15,17 @@
     'maintainer': 'jeff@osbzr.com',
     'website': 'http://openerp-china.org',
     'description': """
-Include those data/包含以下数据
-===============================
+Includes the following data for the Chinese localization
+========================================================
 
-    Account Type/科目类型
+Account Type/科目类型
 
-    State Data/省份数据
+State Data/省份数据
 
     """,
-    'depends': ['base', 'account', 'l10n_multilang','base_address_city'],
+    'depends': ['base', 'account', 'l10n_multilang'],
     'data': [
         'data/res_country_state_data.xml',
-        'data/res_city_data.xml',
         'data/account_account_type_data.xml',
         'data/account_tax_group_data.xml',
     ],

addons/l10n_cn_city/__init__.py

@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.

addons/l10n_cn_city/__manifest__.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+# Copyright (C) 2018-now  jeffery9@gmail.com
+
+{
+    'name': 'China - City Data',
+    'version': '1.8',
+    'category': 'Localization',
+    'author': 'Jeffery Chen Fan<jeffery9@gmail.com>',
+    'description': """
+Includes the following data for the Chinese localization
+========================================================
+
+City Data/城市数据
+
+    """,
+    'depends': ['l10n_cn','base_address_city'],
+    'data': [
+        'data/res_city_data.xml',
+    ],
+}