Enforce a common interface for all Action and Condition related classes
and connect them to a common protocol class to support isinstance
checks.
Related #2659
* Remove import as _ in solaar startup
Related #2273
* Remove import as _ in listener
Related #2273
* Remove import as _ in cli init
Related #2273
* Remove import as _ in gtk
Related #2273
* Remove import as _ in show
Related #2273
* Remove import as _ in tray
Related #2273
* Remove import as _ in profiles
Related #2273
* Remove import as _ in config
Related #2273
* Remove import as _ in config panel
Related #2273
* Remove import as _ in window
Related #2273
* Remove import as _ in pair
Related #2273
* Remove import as _ in pair window
Related #2273
* Remove import as _ in cli package
Related #2273
* Remove import as _ in ui package
Related #2273
* Remove commented out code
Related #2273
* Use constant for Logitech ID