Fixes issue where if the net inspector was open when a board was
loaded, the track data would not be updated until a board edit
action triggered an update.
Pcbnew can hang for a long time when undoing operations involving
large numbers of board items. This provides an interim workaround
(and replicated the behaviour of the search panel) by only
computing track statistics updates incrementally if the inspector
is displayed.
Partially fixes https://gitlab.com/kicad/code/kicad/-/issues/17561
(if net inspector is not shown)
Introduces some updates to the inspector, and a number of bug fixes:
- Correctly handles changes in board stackup
- Correctly handles unit change events
- Correctly handles language change events
- All layout / panel settings are stored to the project settings
- Retains ability to create net report
- Simple filter searches on net name and net class name (stored in settings)
- Allows hide / show of columns (stored in settings)
- Grouping by netclass (stored in settings)
- Optional filtering by net name (stored in settings)
- Optional filtering by net class (stored in settings)
- Custom grouping by net name match