Create feature flag module to control navigation top bar visibility

Backend part is ready for review. We need now to ensure that Top Bar specific styles are moved to the submodule.

Working on the front-end for this.

I wonder if the should call this module just "top_bar" instead of "navigation_top_bar".

Ready for review.

This might be a good idea, but it's not what I asked for in ✨ Add the new Navigation to core as an Experimental module Fixed , all I was suggesting was a feature flag module per ✨ Add an API for feature flags Active and 📌 Replace "Expose all fields as blocks to Layout Builder" configuration with feature flag Active - i.e. using the module being installed or not to determine whether the feature is enabled, instead of custom config. If the top bar should never be enabled independently of the navigation module once everything is stable, then moving it into and out of a module might be too much extra work compared to just a feature flag module. Apologies if this wasn't clear on the other issue.

Probably here we also need to add checking if this topBar module not enabled then render some div with button in main module.
Because now in this MR in mobile we don't have navigation at all.

Created new MR based on the suggestions from #6.

https://git.drupalcode.org/project/navigation/-/merge_requests/258#note_... is exactly what I meant. Could use review of the help text from someone who's more familiar with the functionality.

@finnsky I've finally separate the Top Bar from the "Control Bar" because they will need to be different bars anyway. There is no way we will be able to fit the collapse button + the more actions + the save button... So they are 2 different things now.

ckrina → changed the visibility of the branch 3442059-convert-top-bar-submodule to hidden.

This has been directly merge in 80f2be3d on the MR to core issue ✨ Add the new Navigation to core as an Experimental module Fixed .

Merging to keep consistency on the contrib code.

Automatically closed - issue fixed for 2 weeks with no activity.