refactor: remove LoggingRules interface

[Whale107]

• 废弃相关接口， 默认启用(可以用 DTK_DISABLED_LOGGING_RULES 禁用)
• 如果用户通过 DTK_LOGGING_FALLBACK_APPID 指定 了fallbackAppId, 则优先使用 fallbackAppId, 否则使用 dsgAppId

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Whale107

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Needs approval from an approver in each of these files: - **[debian/deepin/OWNERS](https://github.com/linuxdeepin/dtkcore/blob/release/5.6/debian/deepin/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Whale107

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

Needs approval from an approver in each of these files: - **[debian/deepin/OWNERS](https://github.com/linuxdeepin/dtkcore/blob/release/5.6/debian/deepin/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[Whale107]

这是从 master 分支 cherry-pick 过来的代码？如果需要新接口，使用 DTK 的新版本，不应该往 release/5.6 上加接口。

已更新

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 移除了initLoggingRules函数，但保留了一个新的updateLoggingRules函数，可能需要确认新的逻辑是否与移除的函数功能一致。
• 使用了qWarning替代了qDebug，这可能会影响日志的输出级别。
• 删除了initLoggingRules函数中的环境变量逻辑，可能需要确认这是否是有意为之。
• 删除了registerLoggingRulesWatcher函数中的appId参数，但保留了qWarning消息，这可能会导致混淆。

是否建议立即修改:

• 是，需要确保新的实现与移除的函数功能一致，并确认移除环境变量逻辑是否符合预期。同时，应该澄清registerLoggingRulesWatcher函数的废弃原因，并更新相关的错误消息。

[Whale107]

会从master重新拉release分支，此pr关闭