[#595] Add backend health checks

[SilviaAmAm]

Partly fixes #595

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.41%. Comparing base (eca3853) to head (1900553).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #692      +/-   ##
==========================================
+ Coverage   90.32%   90.41%   +0.08%     
==========================================
  Files         211      212       +1     
  Lines        6286     6343      +57     
  Branches      675      675              
==========================================
+ Hits         5678     5735      +57     
  Misses        608      608              

Flag	Coverage Δ
backend	91.20% <100.00%> (+0.12%)	⬆️
jest	32.71% <ø> (ø)
storybook	86.23% <ø> (ø)

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