Add option to only send clipboard on intent
Summary
This adds an option to the clipboard plugin to only send on intent. It adds 2 cli options, a button to the plasmoid, and a button to the app. It adds a cli option and buttons to the plasmoid, app, and indicator.
Test Plan
I manually tested existing and added clipboard plugin features
Send using app:
Send using plasmoid:
Send using indicator:
Send using cli:
/usr/bin/kdeconnect-cli -n 'My Untrusted Device' --clipboard