Support flavor on the web using flutter dart-define

[armanddidierjean]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 42.85714% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 54.83%. Comparing base (99fc0b9) to head (2cbb9d2).

Files	Patch %	Lines
lib/tools/functions.dart	42.85%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #331      +/-   ##
==========================================
- Coverage   54.87%   54.83%   -0.04%     
==========================================
  Files         166      166              
  Lines        3665     3669       +4     
==========================================
+ Hits         2011     2012       +1     
- Misses       1654     1657       +3     

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

[julien4215]

We need to keep defining two different environments for alpha and prod because we should not use the same value for PLAUSIBLE_HOST and PLAUSIBLE_DOMAIN in alpha or production.