fix: Remove Qt5 dependencies

[caixr23]

Remove Qt5 dependencies

pms: TASK-361721

Summary by Sourcery

Migrate the project from Qt5 to Qt6 and KF5 to KF6.

Enhancements:

• Migrate the project from Qt5 to Qt6.
• Migrate the project from KF5 to KF6.

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 移除了src-old和dcc-network-plugin子目录的引用，确认这些子目录是否不再需要。
• 在debian/control文件中移除了libgsettings-qt-dev、qtbase5-dev、qttools5-dev-tools、libkf5networkmanagerqt-dev、libdtkwidget-dev和qttools5-dev的依赖，确认这些依赖是否确实不再需要。
• 在tests/CMakeLists.txt文件中，将Qt5的依赖更改为Qt6，并添加了Dtk6的依赖，确认这些更改是否与项目的其他部分兼容。
• 在tests/CMakeLists.txt文件中，移除了对KF5::NetworkManagerQt的查找，改为查找KF6::NetworkManagerQt，确认这一更改是否正确。

是否建议立即修改:

• 是，需要确认移除的子目录和依赖项是否确实不再需要，以及Qt6和Dtk6的更改是否与项目的其他部分兼容。如果这些更改是错误的，应该立即修复。

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request migrates the project from Qt5 to Qt6, updates related dependencies such as KF5 to KF6 and introduces Dtk6. It also removes some subdirectories and updates the dde-network-core dependency. Additionally, debian packaging files were removed.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Migrated from Qt5 to Qt6.	Replaced find_package(Qt5 ...) with find_package(Qt6 ...). Updated target include directories to use Qt6::Core, Qt6::Network etc. Updated target link libraries to use Qt6::Core, Qt6::Network etc.	tests/CMakeLists.txt
Removed KF5 and related configurations.	Removed find_package(KF5NetworkManagerQt REQUIRED) and replaced with find_package(KF6NetworkManagerQt REQUIRED). Removed KF5 related include directories. Removed KF5 related link libraries. Removed variable definitions related to KF5.	tests/CMakeLists.txt
Added Dtk6 dependency.	Added find_package(Dtk6 COMPONENTS Core REQUIRED). Added Dtk6::Core to target include directories. Added Dtk6::Core to target link libraries.	tests/CMakeLists.txt
Removed or commented out some subdirectories.	Commented out src-old subdirectory. Commented out dcc-network-plugin subdirectory. Commented out example subdirectory.	CMakeLists.txt
Updated dde-network-core dependency.	Updated dde-network-core to dde-network-core6 in target link libraries.	tests/CMakeLists.txt
Removed debian packaging files.	Removed debian/control. Removed debian/libdde-network-core-dev.install.	debian/control debian/libdde-network-core-dev.install

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[sourcery-ai]

Hey @caixr23 - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider updating the project's C++ standard to C++17 or C++20 to leverage more modern language features.
• Since Qt5 is removed, consider removing the compatibility code in src-old.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: caixr23, mhduiy

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

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