renamed aron converters, added new aron filters and similarity, added memory_conversions to make code look nicer

also get rid of some TODOs

noticing broken items, even when they are not touched. Also coloring
their parents in an orange color, so that the error is noticable even
when not expanded.

For better generality (and was useful for error reporting): All widgets
introduced inherit from a common base class: CustomWidget. It holds a
signal definition that can be used to directly forward signals to its
QTreeWidgetItem underneath.

# Conflicts:
#	source/RobotAPI/gui-plugins/SkillManagerPlugin/SkillManagerMonitorWidgetController.cpp

no idea why it works...

- move into own sub-folder widgets
- Wrapper around QComboBox
- extract ColorPalette creation
- extract string creation for Lists

This reverts commit d7f046dd.

This reverts commit d7f046dd.

# Conflicts:
#	source/RobotAPI/gui-plugins/SkillManagerPlugin/SkillManagerMonitorWidgetController.cpp

This reverts commit 72653b3a.

- add QuaternionWidget
- remove old modal code
- remove Copy and clone of AronTreeWidgetItem
- add recognition of duplicate dict keys
- add countermeasure to tabbing into unchangeable key fields
- make aronType const in AronTreeWidget
- flag tuple code as untested, since aron is currently broken there
- fix weird std::locals setting in AronTreeWidgetSetter.cpp, which causes floating numbers to print as 12,345 with std::to_string()
- add usage of std::launder to make reinterpret_cast more save within the usage of NDArray

Implement IntEnum parsing by both value and string name. The String name
is hadled first.
Also added a feature which displays the contained number of children at
the otherwise empty value field for lists.

Fixed a bug, where the converter visitor sometimes didn't get
called with the visit() method.

Also AronTreeWidgetConverter recursively called itself when listTypes
were involved.

if there are too many items in the matrix widget, the gui would be unwieldy large. Instead only show maneagable subset. The Rest is hidden in the ui.

QTreeWidgetItem already supplies the correct instance via treeWidget()

- static variable gone
- replaced by pointer for each element in hierarchy. (Imagine two persistent trees, total chaos otherwise)
- raw matrix data has column wise sorting. Fix reading and writing code.
- QLineEdit now focuses start of line after setText.

implement further converters

- New Widget which contains an edittext for each matrix element
- self-contained parsing on changes for error highlighting
- moved onTreeWidgetItemDoubleClicked and onTreeWidgetItemChanged to AronTreeWidgetController.h, these GUI actions only concern the Tree widget details, not however the full scope in SkillManagerMonitorWidgetController.h
- in AronTreeWidgetCreator.h: createSimpleTreeViewWidget() now called insertNewTreeViewWidget(). It also directly adds the created widget to the parent, has control flow reasons to add it directly.
 (otherwise we cannot directly overlay custom widgets inside the AronTreeWidgetCreatorVisitor)
 -

relevant change is in AronTreeWidgetSetter.cpp, towards the end.