* Add admin editor for KiCad autocomplete lists
* Add custom KiCad autocomplete list settings
* Ignore the footprints_custom.txt and symbols_custom.txt in git and create them on the fly if needed
Otherwise it breaks the update mechanism
* Added comments
* Include kicad custom files in config backup command
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Co-authored-by: Jan Böhmer <mail@jan-boehmer.de>
