Chromium | Add docs about Kiosk mode autostart option

[StephanStS]

See also: MichaIng/DietPi#4379.

I propose to edit this area https://dietpi.com/docs/software/desktop/#chromium to use tabs and add a tab for the kiosk mode description.

[MichaIng]

The planned change does not require any documentation change. It only makes the Kiosk mode as non-root user work in more cases without manual permission changes. But a tab about the Kiosk mode autostart option makes sense.

[StephanStS]

Info to check:

• https://dietpi.com/forum/t/how-do-i-get-rid-of-the-mouse-pointer-when-i-start-chromium-w-o-desktop/15769
• https://dietpi.com/forum/t/non-interactive-kiosk-improvements/14886

[MichaIng]

Hiding mouse pointer or having a completely non-interactive Chromium would be a new feature, better covered with the "app" mode instead of "kiosk" mode. See:

• DietPi-Software | Chromium: Hide mouse in autostart kiosk mode DietPi#2575
• DietPi-Software | Chromium: Allow to use app mode instead of kiosk mode DietPi#2938
• Chromium Autostart / Kiosk Mode DietPi#3389

[StephanStS]

Hiding mouse pointer or having a completely non-interactive Chromium would be a new feature, better covered with the "app" mode instead of "kiosk" mode.

In the doc (PR #844) I added this option as a tweaking hint. If we have an own dietpi-autostart option for this, we have to change/update the docu.