getSetting now returns a straight nlohmann::json instead of an optional.
If the data isn't present, it will return a json null.
All accesses to the settings will first check that the data has the
expected type.
* Added imnodes
* Added basic data processor view. Still needs to be cleaned up
* Make sure all attached links get properly removed when a Node is deleted
* Cleanup and API exposing
* Added data provider overlays and integrate them with the data processor
* Optimized data processing
* Node UI enhancements
* Added support for all themes to the nodes editor
* Improved data processor context menus
* Fixed data processor context menu showing up everywhere
* Make hex editor context menu behave the same as data processor one
* Add different node pin types and prevent incompatible ones from being connected
* Don't require explicitly marking node as end node
* Fixed plugin copying
* Added some more nodes
