Add WebiOutput and render outcome diagram for flow.

[azriel91]

Part 1 of many for #182.

[codecov]

Codecov Report

Attention: Patch coverage is 80.27638% with 157 lines in your changes are missing coverage. Please review.

Project coverage is 93.87%. Comparing base (4e80771) to head (3cf4509).

Files	Patch %	Lines
crate/webi_output/src/webi_output.rs	0.00%	96 Missing ⚠️
crate/webi_components/src/flow_graph.rs	0.00%	55 Missing ⚠️
crate/webi_components/src/home.rs	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #189      +/-   ##
==========================================
+ Coverage   93.85%   93.87%   +0.02%     
==========================================
  Files         407      416       +9     
  Lines       41320    42339    +1019     
==========================================
+ Hits        38780    39747     +967     
- Misses       2540     2592      +52     

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