Added Vue-Boostrap file

Added Vue-Bootstrap file to build vue js , vuetify , laravel echo, and global event bus.
Make App Js More Clearer By Defining Only Mixins Related to Data, Different Channels and global Event Bus Listener to Dispatch Actions when Certain events occur.

Added @user @enduser as custom blade tags.

check for authenticated User Before You , Tune in to Channels that Requires Authentication.
Such as Presence and Private channels