Support for col-auto

[Discostu36]

Presently, there appears to be no way to get automatically sized columns. I can't create a bootstrap column with just col-auto because the plugin will always add a col-12 class when I haven't selected a column size.

A best-case scenario would be an “auto” checkbox. Alternatively, there should be a possibility to set all column sizes to 0 so that I can then us col-auto as an additional CSS class.

[tschortsch]

With the equal-width options in the column this should be possible. See: https://github.com/liip/bootstrap-blocks-wordpress-plugin?tab=readme-ov-file#options-2