Enable codable on swift bindings

[quexten]

🎟️ Tracking

bitwarden/ios#2648 (comment)

📔 Objective

As per mobile's request, we are enabling codable for the uniffi bindings so that they can directly serialize the structs they get returned from the SDK without having to maintain a seprate copy. Maintaining a separate copy in the past has lead to bugs / incorrect state being saved (bitwarden/ios#2303).

This is safer than mobiles current approach of persisting server request / response models, which do not match what the SDK returns.

🚨 Breaking Changes

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🔍 SDK Breaking Change Detection

SDK Version: km/codable-conformance (1def388)

⚠️ If breaking changes are detected, a corresponding pull request addressing them must be ready for merge in the affected client repository.

Client	Status	Details
typescript	✅ No breaking changes detected	Compilation passed with new SDK version - View Details
android	✅ No breaking changes detected	Compilation passed with new SDK version - View Details

---

Breaking change detection uses the build of the SDK from this branch, including any incompatibities pre-existing on or merged into this branch. Check the workflow logs to confirm.
Results update as workflows complete.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.83%. Comparing base (e13c4fc) to head (1def388).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1096      +/-   ##
==========================================
+ Coverage   83.76%   83.83%   +0.06%     
==========================================
  Files         432      433       +1     
  Lines       54750    54958     +208     
==========================================
+ Hits        45862    46072     +210     
+ Misses       8888     8886       -2     

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[dani-garcia]

Is this something we could also enable for all other crates too? Seems pretty safe to add in general and it seems like it could also be beneficial for ios devs as they integrate the SDK more. Plus it might be a bit strange that some SDK items implement codable but others don't.

[quexten]

@dani-garcia Sure, I think that makes sense. I just did the minimum amount of change to get KM's structs covered, and did not investigate the user-cases / appropriateness on other crates.