jujutsu: add extraConfig attribute to allow more complex config

[just1602]

Description

Hello,

I try to configure jujutsu templates using the settings attribute, but since tomlFormat.generate doesn't convert nix multilines string '' to toml multilines string """, I was wondering if it would be possible to add an extraConfig attribute to the jujutsu module so one could configure more complex attributes like templates using the module?

If I'm just missing something, and there's a way to do that without addind a new attribute, that would be even better :)

[teto]

that would be possible but the root issue seems to be

tomlFormat.generate doesn't convert nix multilines string '' to toml multilines string """

better fix that no ? which exists in nixpkgs repo.

[just1602]

Oh yeah, I'll try to check in nixpkgs for this function then! Thanks!