nemo: add gvfs dependency to display Trash
nemo: add gvfs dependency to display Trash

The Trash and network locations do not work otherwise.

Note that `gvfsd` needs to run in order to interact with the
trash (`trash:///`).

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs