SeerSourceSymbolLibraryManagerWidget: Add close un-used tabs option

[QuangNguyenMinh123]

As disscuss in issues #439, this MR will add option to SeerSourceSymbolLibraryManagerWidget so that users can close any tab that they don't use
This MR haven't deploy QSetting as I’m going to spend some time focusing on integrating openocd into seer
So, @epasveer, if you please, help me to deploy QSetting to this MR

[QuangNguyenMinh123]

To clarify, I add _dumpTab variable to tabWidget
If I don't then when all tab is set to setTabVisible(0), the following bug will occur:
Screencast from 03-12-2026 10:20:58 PM.webm

Try for yourself

[epasveer]

So, @epasveer, if you please, help me to deploy QSetting to this MR

Will do!

[epasveer]

To clarify, I add _dumpTab variable to tabWidget

To be honest, I'm okay with the new logic to enforce having at least 1 tab enabled. I'll try that instead of adding a "_dumpTab" variable.

[epasveer]

Also, I'll do all sections, not just the SourceSymbol section.

And, of course, making things persist to QSettings.

[epasveer]

Give this MR a try. I've made some changes.

I've removed the need for the "dummy" tab. And it persists to QSettings.

[epasveer]

I modified all the other "managers" with the same changes. It works very well.

Thanks for the suggestion!

[QuangNguyenMinh123]

I checked out and tried your commit
It seems to work well
Thanks for your hard works

[epasveer]

Found a bug with recursion. Updated a fix.

[epasveer]

Found a bug with recursion. Updated a fix.

Actually, my fix was rubbish. I made the proper fix in the main line.