New Sharing design

[Tbaut]

From a user on Discord

Here, after sharing... how I can close this window? There is no CLOSE (X button), clicking out of window space also does not working.

We should change this, this means:

• change the sharing component (used when creating a shared folder, or sharing an existing one)
• ditch the current input with ENS etc, and use a single one, see design below
• ditch the double modal, and have only one set of buttons at the bottom

[Tbaut]

A comment for you @serenaho, I realized while playing with the implementation, that the "Generate link" button is unlike any other button in our interface. In fact, while playing with it, only the copy suggest that it does something, but it looks like a normal text, could we make it a little more "button-like", or have it underlined maybe?