Grid-Layout for Widget-Arrangement

[lucasJedel]

DESCRIPTION

Implement a grid layout to arrange widgets in more complex configurations.

Describe the solution you'd like
Possibility to arranges ui elements in rows and columns, so that Widgets with different heightcan be placed in the same row.

Additional context
For example like qt grid layout
layout->addWidget(widget, 0, 2, 4, 1);
0: The row where the widget starts (first row).
2: The column where the widget starts (third column).
4: The number of rows the widget spans (it will be 4 rows tall).
1: The number of columns the widget spans (it will be 1 column wide).

(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