Add support for Laravel Nova 5.x

[serhiilabs]

Hi,
I noticed that the digital-creative/column-toggler package currently only supports Laravel Nova 4.x. However, my project uses Laravel Nova 5.x, and I am unable to install the package due to version conflicts.

Here is the error I encountered during installation:

Problem 1
    - Root composer.json requires digital-creative/column-toggler * -> satisfiable by digital-creative/column-toggler[v0.0.1, ..., v0.2.3].
    - digital-creative/column-toggler[v0.0.1, ..., v0.1.1] require laravel/nova ^4.0 -> found laravel/nova[4.0.0, ..., 4.35.5] but it conflicts with your root composer.json require (^5.0).
    - digital-creative/column-toggler[v0.2.0, ..., v0.2.3] require laravel/nova ^4.28.0 -> found laravel/nova[4.28.0, ..., 4.35.5] but it conflicts with your root composer.json require (^5.0).

It would be great if support for Laravel Nova 5.x could be added to the package.
If there's a roadmap for this update or any known blockers, please let me know! I’d also be happy to help test any updates for compatibility.
Thank you for your work on this package—it’s a valuable tool for Nova users!
Best regards, Serhii

[milewski]

Hi I believe only the composer.json has to be updated, it doesn't seem Nova5 introduced serious breaking changes like from 3 to 4 .. can you do it? and if it work can you submit a PR?