New API endpoint to reset user's passwords

[mario-nt]

Resolves #802

[codecov]

Codecov Report

Attention: Patch coverage is 5.00000% with 76 lines in your changes missing coverage. Please review.

Project coverage is 48.00%. Comparing base (b6e4adf) to head (1e992ba).
Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/mailer.rs	0.00%	50 Missing ⚠️
src/services/user.rs	10.34%	25 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #803      +/-   ##
===========================================
- Coverage    48.53%   48.00%   -0.54%     
===========================================
  Files          111      111              
  Lines         8413     8508      +95     
  Branches      8413     8508      +95     
===========================================
+ Hits          4083     4084       +1     
- Misses        4192     4286      +94     
  Partials       138      138              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.