feat(message): Expand message to support notification-like functionality

[edcarroll]

The message component is currently incredibly limited in scope, supporting only messages created in the component template.

This issue is proposing a large extension of the component's functionality, to include:

• Creating & destroying messages using a service within the component
• Automatic dismissal after n milliseconds
• Support for global messages (i.e. toast notifications)
  • Positioning, with responsive fallbacks
  • Stacking
• Support for custom containers (e.g. above a form)
• Hook for message click events
• Progress bars below showing time until automatic dismissal

Please do weigh in on this proposal, specifically if there are any features you'd like to see / concerns you have.

I'm also debating whether to call this a completely new component, as it adds so much more over the native SUI message component.

[mcosta74]

Hi,

Great idea but I'd like a new component because, as you said, it add so much to the original SUI element

[harogaston]

I also think, as @mcosta74 said, that maybe deviating so much from upstream's behavior could be counter productive. But it is just my opinion. I am willing to contribute in any case. Cheers!