Scan for local network SMB servers.

[Avel-afk]

Hi, It'd be nice if Material files could scan the network for local SMB servers similarly to VLC. Recently, although I knew my SMB server's hostname, IP and password I couldn't log in and I wasnt sure what I got wrong because of the generic error. I've attached VLC's implementation, where you only need to enter the username and password to log in.