Issue 50041 - Set the React dataflow foundation and add basic plugin UI
    
    Description: Add basic plugin functionality - Table and Modal.
    Add Notificationcontroller component which can be used by other
    components in the future.
    Add cockpit component for onoff switch.
    Add custoTableToolbar component with search field and loading spinner.
    Add edit option to Plugin CLI.
    Fix ds.css according to eslint.
    Remove custom OnOffSwitch component because Patternfly seems to work okay.
    Move the start/stop/restart and change server-select event listners
    to the "document is ready" part. React requires the change.
    
    https://pagure.io/389-ds-base/issue/50041
    
    Reviewed by: mreynolds, mhonek (Thanks!)