Please see this forum thread for a custom device handler that allows button press and hold functionality. Note that multi-click functionality is not available in SmartThings.
You can use the “Aqara Button” device handler (from the link I gave above), but this will only be recognized as ONE button. This is a limitation of SmartThings, see this post for more information.
Please see the forum thread I linked to above.
There is no device handler for these. It’s best to set up IFTTT integration, please see this forum thread for more information.
Please see this forum thread for a custom SmartThings device handler.
Good luck!!!