configurable ctrl+v plus click

currently the utility replaces the contents of the clipboard but does not trigger an actual paste, this can be implemented using [enigo](https://docs.rs/enigo/latest/enigo/) as a configurable (not everybody will probably want it) feature.

NOTE: Since clipbud popup takes the focus, the actions to be performed should be: hide window, click to refocus on the original target, and ctrl/meta+v.