add: future delay

[ryuash]

Description

closes #108 closes #107

Checklist

• [x] Targeted PR against correct branch.
• [x] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• [x] Wrote unit tests.
• [x] Run flutter format.
• [ ] Updated the documentation.
• [ ] Added an entry to the CHANGELOG.md file.
• [x] Re-reviewed Files changed in the Github PR explorer.

[codecov[bot]]

Codecov Report

Merging #128 into master will increase coverage by 0.11%. The diff coverage is 89.28%.

@@            Coverage Diff             @@
##           master     #128      +/-   ##
==========================================
+ Coverage   61.82%   61.93%   +0.11%     
==========================================
  Files         266      266              
  Lines        6721     6741      +20     
==========================================
+ Hits         4155     4175      +20     
  Misses       2566     2566              

Impacted Files	Coverage Δ
lib/ui/screens/login_screen/index.dart	0.00% <0.00%> (ø)
lib/ui/blocs/account_read/account_bloc.dart	73.23% <100.00%> (+0.38%)	:arrow_up:
lib/ui/localization/messages/index.dart	61.11% <100.00%> (+0.21%)	:arrow_up:
..._screen/widgets/account_created_content/index.dart	100.00% <100.00%> (ø)
...screen/widgets/account_creating_content/index.dart	100.00% <100.00%> (ø)
lib/ui/widgets/buttons/secondary_button/index.dart	92.30% <100.00%> (+0.64%)	:arrow_up:
lib/ui/widgets/loading_indicator/index.dart	100.00% <100.00%> (ø)
lib/ui/blocs/account_read/account_event.dart	36.36% <0.00%> (+18.18%)	:arrow_up:

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[RiccardoM]

@ryuash Looks like a test is failing. Can you fix that please?

[ryuash]

fixed