Encode API URLs

[axlewin]

to avoid Jetty errors on certain special characters

[codecov]

Codecov Report

❌ Patch coverage is 9.09091% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.23%. Comparing base (3e8b19b) to head (57d4fd6).
⚠️ Report is 76 commits behind head on main.

Files with missing lines	Patch %	Lines
src/app/services/api.ts	20.00%	4 Missing ⚠️
src/app/state/slices/api/eventsApi.ts	0.00%	4 Missing ⚠️
src/app/state/slices/api/emailApi.ts	0.00%	1 Missing ⚠️
src/app/state/slices/api/gameboardApi.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2025      +/-   ##
==========================================
- Coverage   43.24%   43.23%   -0.01%     
==========================================
  Files         577      577              
  Lines       24831    24832       +1     
  Branches     7368     8214     +846     
==========================================
  Hits        10737    10737              
+ Misses      14044    13418     -626     
- Partials       50      677     +627     

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