Runnable on linux with
```
nix-shell maintainers/scripts/update.nix --argstr commit true --argstr package pkgsCross.aarch64-darwin.discord
```
The generated commit will have the pkgsCross prefix so that has to be
removed manually
`pkgsCross.aarch64-darwin.discord-canary: 0.0.312 -> 0.0.314`
Add new withVencord parameter to install Vencord when building. This
uses the previously introduced vencord package.
Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>
