Detect / output of the currently selected tab

[lucasJedel]

DESCRIPTION

What does your feature request improve on? Please describe. Make it possible to detect in code what the currently selected tab in the GUI is -> group -style=tabs

Describe the solution you'd like A clear and concise description of what you want to happen.

Additional context Add any other context or screenshots about the feature request here.

(Do not write below this line)

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DEVS' SECTION

ANALYSIS

(Describe, what's the issue and which changes have to be made)

IMPLEMENTATION STEPS

(see also our Wiki for implementation guidelines)

• Implement the necessary changes in a new branch created here on GitHub
• Test your implementation

DOCUMENTATION STEPS

(see also our Wiki for further information)

• Update the changes log
• Add comments to your implementation
• Add Doxygen documentation comments
• Create or update the documentation articles (*.NHLP and *.NDB files, if needed)
• Update the language strings (*.NLNG files, if needed)

PULL REQUEST

• Create a pull request for your changes
• Fill out the template
• Assign @numere-org/maintainers as reviewers

[numeredev]

@lucasJedel Please fill out the issue description in an understandable manner, thanks