Set a configuration value via environment variable

[theherk]

Is your feature request related to a problem? Please describe.

I'd like to have a modified configuration in specific contexts. Currently to do so, unless I'm missing something, I need to maintain a second configuration file. For instance, I generally use os.editPreset: 'nvim', but in the context of Zed, I want to use zed.

Describe the solution you'd like

I'd like to be able to set LAZYGIT_OS_PRESET=zed to override just this specific value while still using the rest of the config.yml.

Describe alternatives you've considered

I can maintain a second config and use it explicitly, but then for other changes in configuration, I must update both files.

Additional context

FWIW, I can work around this specific issue by removing the value altogether, because EDITOR and VISUAL are correctly utilized. But I still think overrides is a worthy consideration.