feat: add an env variable to enable the new rviz2 theme

[KhalilSelyan]

Description

Please see:

• feat: qt5ct dark mode integration using ansible autoware#4838

This just adds the required env var to the launch file to enable the new theme.

Related links

• Related Issue:
  • Enhancing Autoware Visualization with QT5CT for Unified and Improved Aesthetics autoware#4534

Tests performed

I've confirmed by uninstalling qt5ct I was able to run rviz with older theme with this PR enabled.

And with this enabled, and

• feat: qt5ct dark mode integration using ansible autoware#4838
  this PR applied, new theme was usable.

Notes for reviewers

• This PR should be reviewed alongside any related PRs that involve updates to the UI or styling of RViz.
• Ensure that the setup script is thoroughly tested in different environments to confirm its robustness.

Interface changes

None.

Effects on system behavior

• The RViz interface will have a new dark mode theme applied if the setup script is run and the qt5ct configuration is updated accordingly.
  • feat: qt5ct dark mode integration using ansible autoware#4838
• No changes to the core functionality of Autoware are expected.

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[xmfcx]

Please put the installation related things to the https://github.com/autowarefoundation/autoware/tree/main/ansible/roles

We don't want to run custom scripts in the CMakeLists files.

[KhalilSelyan]

Please put the installation related things to the https://github.com/autowarefoundation/autoware/tree/main/ansible/roles

We don't want to run custom scripts in the CMakeLists files.
@xmfcx I have opened a separate PR on autoware repo with the ansible scripts update
autowarefoundation/autoware#4838

[stale]

This pull request has been automatically marked as stale because it has not had recent activity.

[xmfcx]

It looks like this for me, is this expected?

The button in the circled area looks weird for me.

[xmfcx]

Could you make these less subtle (smaller shadow) and (bottom-centered) (as opposed to bottom-right)?

reference:

[xmfcx]

could you make these selected line color same as the selected menu items?

[xmfcx]

Normal RViz

New theme

sorry for the screenshot quality, OS didnt let me screenshot while textbox was selected.

new theme adds an underline to the selected text in the textbox, could you remove that?

also i think there is a border around it now. but i think it will look good once it becomes gray with the comment above.

[xmfcx]

this has issues

[xmfcx]

disabled things don't look disabled

[xmfcx]

please refer to the tab building blocks from the figma page while styling these tabs, selected and hovered are the same right now.

[xmfcx]

these textbox/combobox dropdowns should also adopt the usual menu color scheme. and remove all rounded corners from them.

[xmfcx]

these shouldn't have checkboxes and follow the menu color scheme. and corners are black for some reason.

[KhalilSelyan]

@xmfcx Should be good to re-review after the latest changes on both the ansible qss side and the tier4_state_rviz_plugin

[xmfcx]

This is just an env var for the theme, we can merge it now. It shouldn't be an issue even if the theme is not installed.

But I will test by removing qt5ct on my machine, just in case.

[xmfcx]

I've confirmed by uninstalling qt5ct I was able to run rviz with older theme with this PR enabled.