Nested group parameters

[Ashwolaa]

I recently made a PR (pyqtgraph/pyqtgraph#3371) on pyqtgraph to implement nested structures in group parameter. Overall, this can help to easily sort elements by using submenus to filter unwanted values compared to a standard and long list.

Here is how we could use it in Pymodaq to sort the detectors according to their dimensions.

I have no clue on how long it takes with pyqtgraph to accept/update PR.

If you are interested, I can make a PR to subclass the GroupParameterItem directly. We can then update the PresetScalableGroup afterwards.

[seb5g]

well yes, implement it into pymodaq and then if/when your pyqtgraph PR is accepted we can remove the ting from pymodaq!