Added tooltip component

We see that in the future such a component will appear in the core of the administrative theme: ✨ Create a new component: Toggletip RTBC .

This is not the same component: the one being proposed to core is a Toggletip. The difference is that a tooltip is exposed on Hover (or Focus) while a toggletip is used on Click or Enter.

Cons: Closing the submenu does not work in the current MP

I tried the submenus on Tugboat and seem to work fine: what am I missing?

RE: `This is not the same component: the one being proposed to core is a Toggletip. The difference is that a tooltip is exposed on Hover (or Focus) while a toggletip is used on Click or Enter.`

I think it is related to component flexibility, `data-toggle-on="hover/click"` etc.

Regression fixed. Temporary for now.

- Rebased on current 1.x
- Added resize observer for trigger.
- Added temporary fix to close cloned flyouts

Left some comments, not 100% sure about the data-tooltip attribute. the naming is very generic so we might run into problems later, in core we've been prefixing things with drupal, so `data-drupal-tooltip` maybe?

Great, thanks!

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