chore: rename network plugin files to match naming convention

Renamed QML files from lowercase to PascalCase to align with the new
control center plugin naming standards. Updated debian/control to
require dde-control-center-dev version greater than 6.1.70 to ensure
compatibility with the new plugin system.

Influence:
1. Verify plugin loading works correctly with new file names
2. Test network functionality remains unchanged after renaming
3. Check that the plugin works with control center version 6.1.70+
4. Validate that older versions of control center are properly rejected

chore: 重命名网络插件文件以符合命名规范

将QML文件从小写命名改为帕斯卡命名法，以符合新的控制中心插件命名标准。更
新debian/control文件要求dde-control-center-dev版本大于6.1.70，确保与新插
件系统的兼容性。

Influence:
1. 验证插件加载功能在新文件名下正常工作
2. 测试重命名后网络功能保持不变
3. 检查插件在控制中心6.1.70+版本上的兼容性
4. 验证旧版本控制中心会被正确拒绝

Author: caixr23

dcc-network/qml/network.qml dcc-network/qml/Network.qmldcc-network/qml/network.qml renamed to dcc-network/qml/Network.qml

@@ -7,7 +7,7 @@ Build-Depends: debhelper-compat (= 12),
                libglib2.0-dev (>= 2.32),
                pkg-config,
                libgtest-dev,
-               dde-control-center-dev,
+               dde-control-center-dev (> 6.1.70),
                dde-tray-loader-dev,
                dde-session-shell-dev,
                libudev-dev,