feat:addition of copy link in the context menu

[Prajan53]

-Added a new menu item know as copy message link
-Used a handler to extract the link and to write it to clipboard.
-Based on the issue #597. 

[RubenGarcia]

@Prajan53 Are you still interested in this? Can you solve the conflicts?

[Prajan53]

@RubenGarcia Yes, I am interested. Can you assign it to me?

[RubenGarcia]

I can't assign it to you but feel free to work on it and somebody from session will assign it to you when they see the messages here.