- fixed some outstanding issues from the PyQt6 port
- PEP8 fixes
- minor fixes
- updated the saving of Preferences to update the self.options too: the `Apply` action will update the self.options but the `Save` action will save the updated preferences to the file on disk
- removed the "follow" functionality from the Isolation Tool
- created a new application Tool named Follow Tool
- added the "follow" functionality in the Follow Tool and added the new feature of allowing to perform "follow" on an area selection
- fixed issue in the Excellon Editor where the Space key did not toggle the direction of the array of drills
- combed the application strings all over the app and trimmed them up until those starting with letter 'O'
- updated the translation strings
- modified some strings and updated the translation strings
- in NCC Tool added a check for the validity of the used tools; its only informative
- in NCC Tool done some refactoring
- fixed the issue with factory_defaults being saved every time the app start
- fixed the preferences not being saved to a file when the Save button is pressed in Edit -> Preferences
- fixed and updated the Transform Tools in the Editors
