feat: sidebar widget with blur widget behind

[deepin-bot[bot]]

Doc Check bot :yellow_circle: some documents missing! File	Line	Symbol
src/widgets/private/dmainwindow_p.h	19	Dtk::Widget::DSidebarHelper

[kegechen]

[kegechen]

/topic sidebar

[deepin-ci-robot]

Add topic: sidebar successed.

[github-actions[bot]]

TAG Bot

TAG: 5.6.23 EXISTED: no DISTRIBUTION: unstable

[kegechen]

/integr-topic sidebar

[deepin-ci-robot]

Integrated with pr https://github.com/deepin-community/Repository-Integration/pull/1015

[kegechen]

/integr-topic sidebar

[deepin-ci-robot]

Integrated with pr https://github.com/deepin-community/Repository-Integration/pull/1015

[kegechen]

/integr-topic sidebar

[deepin-ci-robot]

Integrated with pr https://github.com/deepin-community/Repository-Integration/pull/1015

[kegechen]

/merge

[deepin-bot[bot]]

This pr cannot be merged! (status: blocked)

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: FeiWang1119, kegechen, zccrs

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/dtkwidget/blob/master/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

[kegechen]

/retest

[kegechen]

/check obs

[deepin-bot[bot]]

Deepin Obs Bot Deepin redeliveried failed, need update or recreate pull request!!!