Feature request: edit the grid columns number within a section

[BBE-FR]

The section edit panel curently only allows to change the width of a section.

It could be very powerful and flexible to allow the user to define the number of grid columns they want inside a section (currently 4 by default) just like the "columns" key in the grid cards:


Just to be sure, I tried it in the YAML, just in case, as the syntax is similar to the grid card... but it didn't work.

type: grid
columns: 3
cards: []

Either it could be allow a kind of "high density" section allowing to go to 6 columns, like here: #21713 or even better, a customisable number allowing the user to define it, and especially allow to descend below 4.

This could allow some user to define sections with for example 3 columns grids only, which could allow setups with 3 columns of narrow sections on vertical screens like phone in vertical. for example..

[BBE-FR]

Need closed by the new precise mode allowing to do equivalent need.