nodejs: Provide a static v8 library output
nodejs: Provide a static v8 library output

Since building nodejs also builds v8, one way to get a static v8
library is to manually assemble it from the leftover object
files. This seems like an easier way to get an up-to-date v8 library
than trying to keep the v8 package updated.

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