Update logging

[johnml1135]

Log failing health checks: #482
Log engine activy #433 - the super simple implementation.

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This change is 

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 62.06897% with 11 lines in your changes missing coverage. Please review.

Project coverage is 56.60%. Comparing base (c7f1214) to head (efa70ff).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...lation/Controllers/TranslationEnginesController.cs	65.00%	7 Missing ⚠️
...c/Serval.ApiServer/Controllers/StatusController.cs	55.55%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #483      +/-   ##
==========================================
+ Coverage   56.59%   56.60%   +0.01%     
==========================================
  Files         275      275              
  Lines       14174    14203      +29     
  Branches     1908     1910       +2     
==========================================
+ Hits         8022     8040      +18     
- Misses       5563     5574      +11     
  Partials      589      589              

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[ddaspit]

Reviewed 1 of 1 files at r1, 6 of 6 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johnml1135)