Ability to set/change line-height on focus-mode toggle

[yavorski]

Description of the new feature/enhancement

Ability to set/change the line-height/cellHeight when you toggle focus mode.

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When entering focus mode geometry is changed so neovim is receiving the unwanted/wasted/not used space on bottom.
In order to remove the neovim bottom unwanted space I want to be able to set/change the line-height on focus mode toggle.

Suggestion

Add focus-mode-defaults setting in config.json where we can specify the font cellHeight when focus mode is enabled.

Thank you!

[carlos-zamora]

Thanks for the feature request. We've discussed this as a team and we feel that it might be too niche.

Somewhat related: #11111
That issue refers to admin-specific customizations, but the team has discussed in the past the idea of extending that to "focus mode" customizations as well. It's really the same problem all around: how do we determine which appearance to use when there's an intersection of "unfocused", "admin", and (in this case) "focus mode".