feat: Less annoying floating spam

[g123k]

Hi everyone!

Styles

The Floating message now have 3 styles: success / warning / error.
For the error one, the phone will also vibrate.

Loading variant

A loading variant shows the cloud animation.

Dismissable popup

By clicking on the message, it will now disappear! 🎉

Background tasks

Popups for background product edits (basic details, pictures, labels, origins…) are all removed, because we have this banner on the Edit page (slightly updated):

External page (= opens links on the browser)

If the browser can't be opened, there's now an error.
This screen also supports full URL (with http://)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 1.01010% with 98 lines in your changes missing coverage. Please review.

Project coverage is 6.27%. Comparing base (4d9c7fc) to head (a633fc4).
Report is 649 commits behind head on develop.

Files with missing lines	Patch %	Lines
...mooth_app/lib/widgets/smooth_floating_message.dart	0.00%	33 Missing ⚠️
packages/smooth_app/lib/widgets/smooth_banner.dart	0.00%	30 Missing ⚠️
...mooth_app/lib/pages/product/edit_product_page.dart	5.26%	18 Missing ⚠️
.../smooth_app/lib/pages/navigator/external_page.dart	0.00%	16 Missing ⚠️
...ges/smooth_app/lib/background/background_task.dart	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #6190      +/-   ##
==========================================
- Coverage     9.54%   6.27%   -3.28%     
==========================================
  Files          325     456     +131     
  Lines        16411   26346    +9935     
==========================================
+ Hits          1567    1653      +86     
- Misses       14844   24693    +9849     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.