Dropdown: implements missing features

Currently by having a content prop of type links, this prevent features like https://getbootstrap.com/docs/5.3/components/dropdowns/#forms

I guess in some navigation menu / header, with custom code to generate such dropdowns, this can be useful to be able to support that. For login, search forms.

Uploading patch for Composer usage.

@pdureau, can you please give a look at the MR and also about comment 3?

Currently by having a content prop of type links, this prevent features like https://getbootstrap.com/docs/5.3/components/dropdowns/#forms

I would prefer to keep a convenient data structure with the links prop type, at the cost of not implementing every fetaure of this component.

{% set dropdown_menu_attributes = dropdown_menu_start ? dropdown_menu_attributes.addClass(dropdown_menu_start) : dropdown_menu_attributes %}

Why do we need to test dropdown_menu_start ? What would be the result of {% set dropdown_menu_attributes = dropdown_menu_attributes.addClass(dropdown_menu_start) %} if dropdown_menu_start is empty or not defined?

Ready to merge.

Ok for you @pdureau?

Not tested but reviewed

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