Web UI: First cut

[azriel91]

• Closes First Cut Of Web UI #182.

We still need to clean up the repo with all the TODOs in the issue.

[codecov]

Codecov Report

Attention: Patch coverage is 22.16647% with 2637 lines in your changes missing coverage. Please review.

Project coverage is 88.43%. Comparing base (768a136) to head (16a4669).
Report is 169 commits behind head on main.

Files with missing lines	Patch %	Lines
...e/webi_output/src/outcome_info_graph_calculator.rs	0.00%	1225 Missing ⚠️
crate/rt_model/src/flow.rs	0.00%	434 Missing ⚠️
crate/webi_output/src/webi_server.rs	0.00%	298 Missing ⚠️
crate/webi_components/src/flow_graph.rs	0.00%	92 Missing ⚠️
crate/webi_components/src/flow_graph_current.rs	0.00%	85 Missing ⚠️
crate/rt_model/src/item_wrapper.rs	57.23%	68 Missing ⚠️
crate/flow_model/src/flow_spec_info.rs	34.40%	61 Missing ⚠️
.../item_model/src/item_location_state_in_progress.rs	0.00%	49 Missing ⚠️
crate/webi_output/src/webi_output.rs	0.00%	46 Missing ⚠️
.../item_model/src/item_locations_and_interactions.rs	0.00%	30 Missing ⚠️
... and 32 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #197      +/-   ##
==========================================
- Coverage   93.92%   88.43%   -5.49%     
==========================================
  Files         416      451      +35     
  Lines       41814    45263    +3449     
==========================================
+ Hits        39272    40027     +755     
- Misses       2542     5236    +2694     

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