GUI: remove Descriptors from MinimizerItems

Mikhail Svechnikovrequested to merge
fromMinDescriptors into main

SelectionDescriptor, DoubleDescriptor and UIntDescriptor were removed from MinimizerItems.

All interfaces are created in explicit form.

Limits and tooltips are passed to corresponding spinboxes and comboboxes explicitly.

Edited by Mikhail Svechnikov

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