(setf height) method for message and status buffers and fix CSS for scaling

[aadcg]

Description

Minor improvement.

Checklist:

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  • I have pulled from master before submitting this PR
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  • ASDF dependencies,
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    cd /path/to/nyxt/checkout
    git submodule add https://gitlab.common-lisp.net/nyxt/py-configparser _build/py-configparser

  • and Guix dependencies.
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[aadcg]

I don't understand the error that CCL raises. Any idea? CC @aartaka.

[jmercouris]

CCL is naught but a thorn in my side!

[aadcg]

The issue had nothing to do with CCL, but it's fixed now.

The info below summarizes the PR.

---

Message buffer

Scaling works well.

message-buffer-scalling.mp4

---

Status buffer

Scaling doesn't work so well. @jmercouris I think you'd be more comfortable to adjust the CSS here.

simplescreenrecorder-2023-10-06_15.16.52.mp4

[aadcg]

@jmercouris friendly ping.

[jmercouris]

It is on my TODO list now!

[jmercouris]

These SVGs are driving me crazy, but I am working on it.

[jmercouris]

I did manage to fix the CSS. I had to set the aspect ratio of the control buttons, set the display to flex for the container, and then set the height of the control buttons to 100%.

[aadcg]

@jmercouris great work, thanks!

Minor remark: always rebase when picking up on previously started work. There's no guarantee that another rebase won't be needed before merging, but it helps the reviewer nonetheless.