User should receive a toast confirmation when publishing a campaign

[newleeland]

When a campaign is published there is no feedback for the user to confirm that their publishing action was successful.

A toast message like 'Published "[Campaign name]" successfully.' should be used

ACs

• Finalise existing PR
• Test and confirm functionality with PUX

PR

• BUG Display a notification after publishing a campaign #177

[clarkepaul]

I think the toast notification is okay for MVP but we should really design for a much nicer publish notification for campaigns.
I'm thinking we need to incorporate a loading indicator, and something more like a modal to say the campaign has been successfully launched, congratulations. This could also lead into actions which help you decide what to do next like "copy Campaign", but also provide some more details of the campaign e.g. How many items were published as part of the campaign.

[robbieaverill]

@clarkepaul I'm happy to add a toast message in now if you'd like, but would you rather close this or wait until you have a design for future instead?

[clarkepaul]

@robbieaverill yeah that would be great to add a toast now. Cheers

I'm tracking some more design for this in our backlog which will come up with a more elaborate design (I've raised a separate GitHub issue for the more detailed experience #135).