fix: revamp the signup prompt

[Akashsri3bi]

• Fixes: Revamp the prompt to signup to be more engaging #3578

I was little confused about the type of image that would be better , So if there is any changes do tell . I hope it looks fine attaching a screenshot for the same, and didn't change much of text styling wanted to it to be more like as @teolemon showed in picture but thought it would disturb the font and the theme of app .

[codecov-commenter]

Codecov Report

Merging #3709 (41ecd72) into develop (ad46236) will increase coverage by 0.85%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop    #3709      +/-   ##
===========================================
+ Coverage     9.45%   10.30%   +0.85%     
===========================================
  Files          269      272       +3     
  Lines        13571    13754     +183     
===========================================
+ Hits          1283     1418     +135     
- Misses       12288    12336      +48     

Impacted Files	Coverage Δ
...pp/lib/pages/product/common/product_refresher.dart	1.75% <0.00%> (-0.21%)	⬇️
packages/smooth_app/lib/main.dart	13.70% <0.00%> (-1.34%)	⬇️
...ib/pages/preferences/user_preferences_connect.dart	5.50% <0.00%> (-1.32%)	⬇️
...ooth_app/lib/background/background_task_badge.dart	8.33% <0.00%> (-0.76%)	⬇️
...es/smooth_app/lib/pages/scan/camera_scan_page.dart	0.43% <0.00%> (-0.01%)	⬇️
...s/smooth_app/lib/tmp_crop_image/new_crop_page.dart	0.00% <0.00%> (ø)
...smooth_app/lib/pages/product/new_product_page.dart	0.00% <0.00%> (ø)
...ooth_app/lib/background/background_task_image.dart	0.00% <0.00%> (ø)
...oth_app/lib/pages/product/edit_new_packagings.dart	0.00% <0.00%> (ø)
...oth_app/lib/pages/product/simple_input_widget.dart	0.00% <0.00%> (ø)
... and 25 more

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[M123-dev]

Looks great design wise, I would prefer it a bit smaller, so that it is still visible that it is a alert dialog but I'm open

[Akashsri3bi]

Looks great design wise, I would prefer it a bit smaller, so that it is still visible that it is a alert dialog but I'm open

Ha ha It's actually small, I cropped the image so that we can see the design clearly

[M123-dev]

Ohh, my bad. Looks great @Akashsri3bi